Rhobell Fawr is the site of an ancient volcano that was active during the Early Ordovician period[1][2] in the Arenig range within the Snowdonia National Park.
Despite its modest height of 734 m (2,408 feet), it is a mountain with views of higher peaks all around, including the north face of Cadair Idris and distant Snowdon.
The paths are not well trodden, but there is a distinct path up from Bwlch Goriwared, a couple of miles north-north-east of the small village of Llanfachreth.
^Geoscience Wales (2015). "Rhobell Fawr: The First Signs of Ordovician Volcanism in North Wales".
^"North West Wales Outdoors: Snowdon". BBC. 2002. Archived from the original on 16 October 2006.
RhobellFawr is the site of an ancient volcano that was active during the Early Ordovician period in the Arenig range within the Snowdonia National Park...
lying to the north. It is surrounded by Moel Llyfnant to the west, RhobellFawr to the south and Mynydd Nodol to the east. The easy-to-moderate climb...
are Y Garn and Diffwys, to the west RhobellFawr and Aran Fawddwy and to the south are Waun-oer and Cribin Fawr. Nuttall, John & Anne (1999). The Mountains...
remains of these volcanoes are still visible, one example of which is RhobellFawr dating from 510 Ma. Large quantities of volcanic lava and ash known as...
estimated 60 cubic kilometres (14 cu mi) of debris. Another volcano formed RhobellFawr near Dolgellau. During this period, great accumulations of sand, gravel...
mountain in central Snowdonia, north Wales. It is the sister peak of RhobellFawr. It lies north of the A494 between Dolgellau and Llanuwchllyn. Its eastern...
the north, Foel y Geifr to the east, Erw y Ddafad-ddu to the south and RhobellFawr and Cadair Idris to the west. North-east of the summit is a lake, Llyn...
remains of these volcanoes are still visible, one example of which is RhobellFawr dating from 510 Ma. Large quantities of volcanic lava and ash known as...
cairn that marks the summit. The views of Arenig Fawr are excellent, while to the south RhobellFawr and Dduallt can be observed, and to the west Gallt...
reserve near Dolgellau in Wales. Its position on the lower slopes of RhobellFawr, one of north Wales’ extinct volcanoes, results in an unusual mix of...
is in the valley of the Mawddach and at the foot of Foel Offrwm and RhobellFawr. To the south-west on another prominent hill, the Foel Cynwch, is the...
Tudwal's formations), Cwm Eigiau, Allt Fawr Rhyolitic Tuff, Dwyfach and Nod Glas formations Overlies Mawddach Group, Rhobell Volcanic Group Thickness variable...
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