Parked in Nant Glas walked up road to farm then up footpath to open access area, east a bit and then straight up by the fence - beastly steep, heavy bracken and no path. There are two distinct tops to this hill, one with a large stone pillar and beacon. Tried making way down east but got told off for taking obvious path - someone was zealously guarding their grass. So returned down steep side. Took long way back on public bridleway through farm, and forest. Nice!