Above the stone and the houses here is Parc Common and its modern gorsedd circle.
Carreg Fasnach
A spot, with a natural outcrop of rock, where tradition has it that Machynlleth markets were held during an outbreak of plague, the money used in barter being washed in the adjoining brook, called Nant yr Arian. -- Visited, 20th April, 1910.
An inventory of the ancient and historical monuments of the county of Montgomery (1911).