July 27th 1779. The Vale, or Glen of Penanmaen [sic] – in which was the Ancient Mansion [Tai Panamnen] built by Iauan ap Roberts ap Merridith. It opens from the Vale of Dolwyddelen.
What was left in 1960 of the dam that created ‘Penamnen lake’. The resevoir provided power for Penllyn Quarry