A stone structure with its north, east and west walls almost intact and surviving to between 1m - 1.5m in height and 0.5m in thickness. Few stones remain on the south side. On the east wall, 0.5m off the ground and 1.5m into the structure is a gap of 0.5m which could plausibly have been a window. 2m south of this structure is a crater with a stone-lined channel reaching down 1m. The channel is on the same alignment as the incline and measures 1msq. whilst the crater measures 12m east/west and 10m north/south. Noted during an upland survey conducted by Archaeophysica during 2005-6