1. A subcircular cairn, 15m north-south by 13m & 0.8m high, set immediately W of Cairn II (Nprn400915) on the summit of Drosgol; a shelter, 5.5m across, has been constructed on the SW part. (source Os495card; SN78NE10). J.Wiles 22.07.04

2. Described in 1984 as "a pair of much denuded cairns, one having a shelter built out of it". DAT SMR, 1987.

3. Two cairns on summit of Drosgol hill, each c. 8-10m in diameter. Partly altered by creation into shelters . Drosgol cairns mentioned in Archaeology in Wales. R.S. Jones, Cambrian Archaeological Projects, 2004.