Coflein description:
A roughly oval enclosure, c.190m NE-SW by 110m, comprehending the summit of Foel Hill, defined by scarps representing a single bank and ditch, with traces of a E facing entrance.
The W part of the interior appears to have been scarped/terraced.
APs appear to show the E end of an inner enclosure, c.100m NE-SW by 50m, otherwise represented by terracing in W part of interior.