Bwlch-y-Seiri camp is an oval enclosure, about 56m east-west by 44m, defined by a bank, ditch and counterscarp, having a circular ditched mound, about 30m in diameter immediately adjacent on the west, the whole occupying the nub of a west-facing spur.

(source Os495card; SN31NW3)


J.Wiles 25.02.04