A roughly circular structure defined by a bank that is faced inside and out with orthostatic angular blocks.
Its overall diameter is 10m, internally 7m-7.5m, the stone-faced bank 1.2m-1.5m wide and up to 0.9m high. The site is overgrown with bracken, and a footpath lies immediately adjacent on the west.
[for a more detailed description see Cadw SAM description CN284. Note: the site location is some 80m to the north of the position given by Cadw which was SH226268].

David Leighton, RCAHMW, 24 July 2006.