Pits and ruined buildings.
Publications (1)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
Nant y Fron - 141m
Fronlog - 282m
Twll Llwyd - 315m
Singrig - 424m
Twll Coed - 454m
Tyddyn Agnes - 479m
Tanrallt - 528m
Plas Du - 565m
Ty'n y Llwyn - 754m
Ty'n y Weirglodd - 804m
Ty Mawr West - 941m
Ty Mawr Green - 982m
Bryn Castell - 1,074m
Nantlle Vale - 1,115m
Coed Madog - 1,166m
Twll John Fowc - 1,250m
Cloddfa'r Coed - 1,381m
Gwernor - 1,428m
Cornwall - 1,483m
Pwll Fanog - 1,563m
Gwernor - 1,608m
Tal y Sarn - 1,668m
Dorothea - 1,835m
Allt Llechi - 1,961m
Gallt y Fedw - 1,997m