Possible entrance to a coal level, although none is marked here on the historic OS maps. It forms a cutting 20m long N-S, 3-4m wide and up to 15m deep. The upper end is blocked by subsidence. There is an associated spoil tip (nprn 507296) lower down the slope.
Recorded as part of Uplands Initiative Survey. R Hayman, H&H, 01/09/2009.