This wonderful collection of information and photographs from ‘Ancient Cynon Valley’ was supplied to AberdareOnline by Ian Headford, Rhondda. Carn Pentyle-hir This round cairn is found very close to the mast that is on the summit of the mountain in between Aberdare and Merthyr (SO 0201 0528). The diameter of the cairn is 6.1m and … Continue reading Ancient Cynon Valley