1. Slate quarry, depicted on OS County series (Merioneth. XXIII NE 1891): it is suggested that the rectangular structure built into Pennant cairn (Nprn306587), at SJ04823331, is an associated powder store.
(source Os495card; SJ03SW9)
RCAHMW AP94-CS 1163-7
RCAHMW AP945173/45
J.Wiles 12.07.04

2. Located on the north side of the stream, a linear cut into the hillside measuring up to 10m wide and 5m high, over 50m long E-W. It opens into a water-filled bowl at the E end measuring 30m across. The water level in this is lower than the stream, the spoil tips preventing flooding. (RCAHMW air photo mapping feature on RAF Vertical AP CPE/UK 2010 - 4266.) (A.C.K. Roseveare & N.A.R. Vaughan, AP, 29/03/2007)