What is recorded here
The National Monuments Record of Wales records Pen Twyn Glas, Cairn I as Cairn from the Prehistoric period. The saved point comes from the official national record. Inclusion does not by itself mean that the public may enter the place.
Prehistoric cairn, likely Neolithic in origin. Its inclusion in the National Monuments Record of Wales indicates recognition of its archaeological value, though specific details on construction or wider significance are not provided.
The historic-place record does not grant public access. Check current conditions and ownership before entering land or a building.
Places near here
Pen Twyn GlasMountain / peak · 49 yd
Pen Twyn Glas MoundBoundary Cairn · 54 yd
Lower Ffald Fawr, BridgeBridge · 1108 yd
Pen Allt-Mawr Ridge, Cairn IICairn · 1252 yd
Planted woodlandForest or wood · 1358 yd
Pen Allt-mawrMountain / peak · 1675 yd
Darren Fach, Quarry XVQuarry · 1756 yd
Birch tree by the forest edgeForest or wood · 1.4 mi
Cwmdu church towerCastle, fort or tower · 2.2 mi
Mountain bike trailMountain or hill · 2.9 mi
Tretower CastleCastle · 3.3 mi
Cliff over Grwyne Fawr ReservoirCliff or headland · 3.4 mi