Publications (1)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
Gaewern - 327m
Ty'n y Berth - 364m
Abercwmeiddaw - 754m
Afon Deri - 836m
Cwm Dylluan - 843m
Tap Ddu - 858m
Braich Goch - 1,051m
Abercorris (trial) - 1,122m
Corris Mine Explorers - 1,167m
King Arthur's Labyrinth - 1,195m
Abercorris - 1,237m
Mynydd Tyn y Ceunant - 1,320m
Pen y Garreg - 1,401m
Bryn Llwyd Uchaf - 1,585m
Tarran Cadlan - 1,863m
Pandy - 1,886m
Bryn Llwyd - 1,928m