A group of quarry buildings/shelters located at the mouth of the access tramway into Chwarel Cefn Du quarry (NPRN 400667). One shelter remains to full extent of 4m long by 3m wide with walls remaining intermittently to a height of 1.5m. All other remains are obscured below collapsed walls and spoil. The site is marked on the OS 1st Edition mapping. P.J. Schofield, OANorth, 27th June 2007
