Coedymwstwr Woodlands is a Site of Special Scientific Interest located between Coychurch and Pencoed in Bridgend County Borough, south Wales.
The woodlands is home to Coed-y-Mwstwr cave, a caving system that has been theorised as a hiding space used by Owain Glyndŵr. The main passage is 5 metres high and 60 metres long.
References
See also List of Sites of Special Scientific Interest in Mid & South Glamorgan