<?xml version="1.0"?>
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	<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Y_Gurn_Ddu</id>
	<title>Y Gurn Ddu - Hanes golygu</title>
	<link rel="self" type="application/atom+xml" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Y_Gurn_Ddu"/>
	<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;action=history"/>
	<updated>2026-05-01T05:15:04Z</updated>
	<subtitle>Hanes diwygio&#039;r dudalen hon ar y wici</subtitle>
	<generator>MediaWiki 1.43.1</generator>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=13385&amp;oldid=prev</id>
		<title>Cyfaill Eben am 16:29, 10 Ebrill 2022</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=13385&amp;oldid=prev"/>
		<updated>2022-04-10T16:29:45Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:29, 10 Ebrill 2022&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pentref &lt;/del&gt;[[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhan o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;agosaf at y &lt;/del&gt;môr ceir &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;nifer o &lt;/del&gt;hen &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;chwareli &lt;/del&gt;ithfaen, er &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;nad oedd yr &lt;/del&gt;un mor &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;lewyrchus &lt;/del&gt;â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, gopa uchaf y pum copa, Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipiau a [[Moel Bronmiod]]. Mae hen garneddau, sef pentyrrau o gerrig o&#039;r Oes Efydd ar ystlys dde-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;crwn &lt;/del&gt;o&#039;r Oes Haearn yn y bwlch bach rhwng Gurn Ddu a Gurn Goch. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ardal Tyddyn Hywel a phentref &lt;/ins&gt;[[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhan o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;serth sy&#039;n wynebu&#039;r &lt;/ins&gt;môr ceir &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;olion dwy &lt;/ins&gt;hen &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;chwarel &lt;/ins&gt;ithfaen, er &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;na fu&#039;r &lt;/ins&gt;un &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ohonynt &lt;/ins&gt;mor &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;llewyrchus o gryn dipyn &lt;/ins&gt;â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, gopa uchaf y pum copa, Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipiau a [[Moel Bronmiod]]. Mae hen garneddau, sef pentyrrau o gerrig o&#039;r Oes Efydd ar ystlys dde-ddwyreiniol y mynydd, ac olion hen drigfannau&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;megis cytiau &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;crynion &lt;/ins&gt;o&#039;r Oes Haearn&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;yn y bwlch bach rhwng Gurn Ddu a Gurn Goch. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Cyfaill Eben</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=11283&amp;oldid=prev</id>
		<title>Irion am 18:41, 30 Mawrth 2021</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=11283&amp;oldid=prev"/>
		<updated>2021-03-30T18:41:41Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 19:41, 30 Mawrth 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhan o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, gopa uchaf y pum copa, Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Clipuau &lt;/del&gt;a Moel Bronmiod. Mae hen garneddau, sef pentyrrau o gerrig o&#039;r Oes Efydd ar ystlys dde-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau crwn o&#039;r Oes Haearn yn y bwlch bach rhwng Gurn Ddu a Gurn Goch. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhan o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, gopa uchaf y pum copa, Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Clipiau &lt;/ins&gt;a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;Moel Bronmiod&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;. Mae hen garneddau, sef pentyrrau o gerrig o&#039;r Oes Efydd ar ystlys dde-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau crwn o&#039;r Oes Haearn yn y bwlch bach rhwng Gurn Ddu a Gurn Goch. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=11282&amp;oldid=prev</id>
		<title>Cyfaill Eben am 16:37, 30 Mawrth 2021</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=11282&amp;oldid=prev"/>
		<updated>2021-03-30T16:37:54Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:37, 30 Mawrth 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;rhai &lt;/del&gt;o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;copa &lt;/del&gt;uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen garneddau, sef pentyrrau o gerrig o&#039;r Oes Efydd ar &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ystys de&lt;/del&gt;-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau crwn o&#039;r Oes Haearn yn y bwlch bach rhwng Gurn Ddu a Gurn Goch. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;rhan &lt;/ins&gt;o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;gopa &lt;/ins&gt;uchaf y pum copa&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen garneddau, sef pentyrrau o gerrig o&#039;r Oes Efydd ar &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ystlys dde&lt;/ins&gt;-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau crwn o&#039;r Oes Haearn yn y bwlch bach rhwng Gurn Ddu a Gurn Goch. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Cyfaill Eben</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=11257&amp;oldid=prev</id>
		<title>Irion: Symudodd Heulfryn y dudalen Gurn Ddu i Y Gurn Ddu</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=11257&amp;oldid=prev"/>
		<updated>2021-03-29T13:06:44Z</updated>

		<summary type="html">&lt;p&gt;Symudodd Heulfryn y dudalen &lt;a href=&quot;/wici/Gurn_Ddu&quot; class=&quot;mw-redirect&quot; title=&quot;Gurn Ddu&quot;&gt;Gurn Ddu&lt;/a&gt; i &lt;a href=&quot;/wici/Y_Gurn_Ddu&quot; title=&quot;Y Gurn Ddu&quot;&gt;Y Gurn Ddu&lt;/a&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 14:06, 29 Mawrth 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;cy&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(Dim gwahaniaeth)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6870&amp;oldid=prev</id>
		<title>Irion am 13:46, 9 Medi 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6870&amp;oldid=prev"/>
		<updated>2019-09-09T13:46:54Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 14:46, 9 Medi 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhai o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;bentyrrau &lt;/del&gt;o gerrig ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau crwn yn y bwlch bach rhwng Gurn Ddu a Gurn Goch.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhai o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;garneddau, sef pentyrrau &lt;/ins&gt;o gerrig &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o&#039;r Oes Efydd &lt;/ins&gt;ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau megis cytiau crwn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o&#039;r Oes Haearn &lt;/ins&gt;yn y bwlch bach rhwng Gurn Ddu a Gurn Goch&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. Ail-ddefnyddiwyd rhai o&#039;r hen waliau hyn i greu corlannau defaid ar ryw adeg&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6869&amp;oldid=prev</id>
		<title>Irion am 11:19, 9 Medi 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6869&amp;oldid=prev"/>
		<updated>2019-09-09T11:19:28Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 12:19, 9 Medi 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhai o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen bentyrrau o gerrig ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau yn y bwlch bach rhwng Gurn Ddu a Gurn Goch.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Gurn Ddu&#039;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhai o&#039;r mynydd ym mhlwyf [[Clynnog Fawr]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen bentyrrau o gerrig ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;megis cytiau crwn &lt;/ins&gt;yn y bwlch bach rhwng Gurn Ddu a Gurn Goch.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6868&amp;oldid=prev</id>
		<title>Irion am 11:17, 9 Medi 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6868&amp;oldid=prev"/>
		<updated>2019-09-09T11:17:24Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 12:17, 9 Medi 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;Gurn Ddu&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen bentyrrau o gerrig ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau yn y bwlch bach rhwng Gurn Ddu a Gurn Goch.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039;Gurn Ddu&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039; yn fynydd uwchben pentref [[Gurn Goch&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]. Mae&#039;r copa ym mhlwyf [[Llanaelhaearn]] er bod rhai o&#039;r mynydd ym mhlwyf [[Clynnog Fawr&lt;/ins&gt;]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&#039;r de a&#039;r gorllewin ceir olion hen weithfeydd manganîs o&#039;r 19g. Mae copa&#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen bentyrrau o gerrig ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau yn y bwlch bach rhwng Gurn Ddu a Gurn Goch.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6867&amp;oldid=prev</id>
		<title>Irion: Crëwyd tudalen newydd yn dechrau gyda &#039;Mae &#039;&#039;Gurn Ddu&#039;&#039; yn fynydd uwchben pentref Gurn Goch. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus...&#039;</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Gurn_Ddu&amp;diff=6867&amp;oldid=prev"/>
		<updated>2019-09-09T11:15:56Z</updated>

		<summary type="html">&lt;p&gt;Crëwyd tudalen newydd yn dechrau gyda &amp;#039;Mae &amp;#039;&amp;#039;Gurn Ddu&amp;#039;&amp;#039; yn fynydd uwchben pentref &lt;a href=&quot;/wici/Gurn_Goch&quot; class=&quot;mw-redirect&quot; title=&quot;Gurn Goch&quot;&gt;Gurn Goch&lt;/a&gt;. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus...&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Tudalen newydd&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Mae &amp;#039;&amp;#039;Gurn Ddu&amp;#039;&amp;#039; yn fynydd uwchben pentref [[Gurn Goch]]. Ar yr ochr agosaf at y môr ceir nifer o hen chwareli ithfaen, er nad oedd yr un mor lewyrchus â chwareli[[Yr Eifl|&amp;#039;r Eifl]]. Ar lethrau uchel y mynydd ar yr ochrau i&amp;#039;r de a&amp;#039;r gorllewin ceir olion hen weithfeydd manganîs o&amp;#039;r 19g. Mae copa&amp;#039;r mynydd 1712 troedfedd (522 metr) uwchben lefel y môr. Dyma, felly, copa uchaf y pum copa Gurn Ddu, [[Gurn Goch]], [[Bwlch Mawr]], Clipuau a Moel Bronmiod. Mae hen bentyrrau o gerrig ar ystys de-ddwyreiniol y mynydd, ac olion hen drigfannau yn y bwlch bach rhwng Gurn Ddu a Gurn Goch.&lt;br /&gt;
&lt;br /&gt;
{{eginyn}}&lt;br /&gt;
==Cyfeiriadau==&lt;br /&gt;
{{cyfeiriadau}}&lt;br /&gt;
[[Categori:Daearyddiaeth ffisegol]]&lt;/div&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
</feed>