Castle Rock is a spectacular outcrop of a lode on surface forming a prominent monadnock type feature. Trials and shaft are visible near the rock which marks the western boundary of the Dyfngwm sett. Beyond, the lode splits into a north branch heading towards Esgairgaled and a south branch heading towards Dyfngwm and Pen Dylife, with extensive trials along its length.
Publications (2)
- Bick, D.E. (1991); Old Metal Mines of Mid-Wales, The; West Montgomeryshire, Aberdovey, Dinas Mawddwy & Llangynog - Part 4; pp. 14-15
- Jones, Nigel and Walters, Mark and Frost, Pat (2004); Mountains and Orefields; 208 pages
