, Northern Outcrop - East (Morlais to Abergavenny)
map using leaflet map:
On open moorland.
Sink in doline complex, 200m ESE of Chartist Cave. Water sinks into boulder chamber with grit roof.
Crescent Cave was visited on 14/03/09 and it was found that the scaffolded shaft in the floor of the entrance chamber was full of rubble. The cave is not accessible at the moment. There appears to have been a collapse of the right hand wall which filled the shaft.
SSSI: 3159 Mynydd Llangynidr(Geological)
Caves and Caving 76, Summer 1997, p.13, Under Llangynidr
Phil Jayne, Crescent Cave: a Brynmawr Caving Club dig, Caves & Caving, 79, pp.8-9