Underground trial, with adit to flooded chamber.
CRoW land. Adjacent to RoW
Publications (2)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
- Richards, Alun John, (1999); The Slate Regions of North and Mid Wales and their Railways; Gwasg Carreg Gwalch; 0863816001
Gamallt - 418m
Carters - 435m- Drum - 738m
- Chwarel Llew Twrog - 747m
- Chwarel Llew Twrog - 882m
- Cwm Teigl - 1,026m
- Clogwyn Garw - 1,150m
- Y Garnedd - 1,325m
Llyn Gamallt - 1,424m- Foel-Gron - 1,475m
- Bryn-Glas - 1,529m
- South Pole - 1,620m
- Manod - 1,849m
- Graig Ddu - 1,906m
- Nantpistyll Gwyn - 1,916m
