Castell Coch is on the tip of a cliff-girt promontory, about 56m north-south, reduced by recent quarrying to roughly 22m east-west, is delimited to the east by two straight segments of multiple bank ditch, angled upon a central entrance gap, the section to the south comprising three lines of ramparts.

(source OS495 card; SM73SE2)

RCAHMW AP94-CS 0135
RCAHMW AP945013/52-3

J.Wiles 27.05.2002