A small stone lined tank that provided what appears to be a back up supply of water tot he main processing works to augment the supply from the main reservoir. The tank is fed from a couple of roughly constructed leats on teh hillside above the site. It cuold have been an early attempt to provide water for the site until the larger reservoir 200m to the W was constructed. About 5.5m x 3.5m overall.
John Latham, RCAHMW, 14 March 2012.
(from Mining on the Dolmelynllyn Estate by Peter Crew & John Latham, 1984)