The northernmost of two cairns (the southerly cairn is recorded under nprn 84289) on Twyn-swnd measures 17m in diameter and was originally perhaps 1.5m high but a central excavation hollow 7m across and 2m deep has raised the cairn to 2.5m high. The east side of the cairn has been opened up.

David Leighton, RCAHMW, January 2001