Publications (1)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
Glynrhonwy - Bomb Store - 448m
Cambrian - 669m
Glynrhonwy Lower - 755m
Ladas - 755m
Boundary - 886m
Caerbanciau - 992m
Glynrhonwy Upper - 995m
Alltwen - 1,031m
Chwarel Isaf - 1,101m
Vaynol - 1,115m
Bwlch y Groes - 1,125m
Twll Goch - 1,125m
Cook & Ddol - 1,229m
Fronhyfryd - 1,302m
National Slate Museum - 1,381m
Vivian - 1,399m
Chwarel Goch - 1,522m
Lloc - 1,589m
Cefn Ddu - 1,706m
Frondirion - 1,766m
Pen Llyn - 1,846m
Arddu - 1,936m