Noted in the Merioneth Inventory from field notes taken in August 1914 as a spring that flows into a rock cavity with water standing to a depth of around 14 inches in a rock cistern. It is probably the one mentioned by Edward Lhuyd but not now associated with St. Tecwyn.

Assumed to be at the location of the spring marked on modern Ordnance Survey mapping.

RCAHMW, June 2014.