Now there’s always something a little more exciting – should one happen to be excited by this kind of thing – when a monument is accorded a personalised name upon OS mapping. However, that’s not to say the remains will always live up to the heightened expectations...
On balance, I reckon Castell y Garn, the remains of a ring cairn upon a c1,620ft summit between St. Harmon and Bwlch-y-Sarnau, manages to not disappoint. Reached by a stony track from the latter hamlet (including a short, sharp deviation uphill), the setting is airy and rather spectacular, with panoramic views to the Wye Valley and Cwmdeuddwr Hills to the west. The monument itself, however, is initially rather conspicuous by its apparent absence, with just a mutilated residue standing before a fence junction. Gaze beyond said fence, however, and a rather large diameter (apparent) ring cairn will be discerned.
There is no doubting the prehistoric provenance since CPAT notes:
“Williams [1858] records it as ‘a most perfect cairn accompanied with a stone chest, human bones, black earth and other corresponding appendages.’”
Sure, the cairn has clearly suffered much trauma since then, but thankfully still survives. CPAT adds:
“Site seems to be a ring cairn with a low bank 1.2m wide and 0.25m high visible most clearly in SE quadrant. Elsewhere, there is a low bank forming the outer edge, but no inner edge to the ring bank. Two fence lines cross the site and join in the middle. Although eroded in the past the threat is not so serious now as 10 years ago (CPAT, 3/8/00).”