A gothic ruin, c.20m WNW-ESE by 6.0m, the gable-ends of which, in contrast to the N & S walls, are fairly complete, each featuring a large window with ruined tracery.
(source Os495card; SS88NW22)
The ruin acted as a viewpoint in the (19th c.) park of Margam Castle (Nprn265727).
RCAHMW AP955060/70
J.Wiles 10.12.02