Moelwyn Mawr
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| Moelwyn Mawr | |
|---|---|
 Moelwyn Mawr summit ridge | |
| Highest point | |
| Elevation | 770 m (2,530 ft) |
| Prominence | 385 m (1,263 ft) |
| Parent peak | Moel Siabod |
| Listing | Marilyn, Hewitt, Nuttall |
| Naming | |
| English translation | great white hill |
| Language of name | Welsh |
| Pronunciation | Welsh: [ˈmɔɨlwɨn ˈmaur] |
| Geography | |
 | |
| Location | Gwynedd, Wales |
| Parent range | Snowdonia |
| OS grid | SH658448 |
| Topo map | OS Landranger 124 |
| Name | Grid ref | Height | Status |
|---|---|---|---|
| Moelwyn Bach | 710 m (2,330 ft) | Hewitt, Nuttall | |
| Craigysgafn | 689 m (2,260 ft) | sub Hewitt, Nuttall | |
| Moel-yr-hydd | 648 m (2,126 ft) | Hewitt, Nuttall | |
| Moelwyn Mawr North Ridge Top | 640 m (2,100 ft) | Nuttall |
Moelwyn Mawr is a mountain in Snowdonia, North Wales and forms part of the Moelwynion. Its summit overlooks the Vale of Ffestiniog and has views in all directions.
In 1990, Moelwyn Mawr was designated a Site of Special Scientific Interest[1][2][3] of national scientific importance. The glaciated landscape of the mountain provides fine examples of two specific Pleistocene features. On the north-east flank of the mountain is a terrain of patterned ground, consisting of small-scale vegetated stripes. On the north side, a debris tongue formed by a rock glacier extends into Cwm Croesor.
Quarrying
Slate quarrying was a major industry for many years in the Moelwynion. Moelwyn Mawr's flanks have several major quarries on them. To the north is Croesor Quarry perched high above Cwm Croesor. To the north east is Rhosydd Quarry on the col between Cwm Croesor and Cwm Orthin. Within Cwm Orthin, Conglog and Wrysgan quarries are located on the north slope of the mountain. Within Cwm Ystradau to the east lies Moelwyn Slate Quarry.[4]
