Publications (1)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
Chwarel Isaf - 407m
Alltwen - 479m
Vaynol - 553m
Boundary - 580m
Fronhyfryd - 675m
Goodmans - 755m
Glynrhonwy - Bomb Store - 839m
Chwarel Goch - 866m
Vivian - 909m
Lloc - 926m
National Slate Museum - 1,004m
Frondirion - 1,056m
Arddu - 1,256m
Glynrhonwy Lower - 1,392m
Cambrian - 1,422m
Glynrhonwy Upper - 1,668m
Caerbanciau - 1,746m
Dinorwig - 1,797m
Twll Goch - 1,868m
Bwlch y Groes - 1,879m
Cook & Ddol - 1,917m
Pen Llyn - 1,968m