Glamorgan hills & mountains Map featuring Glamorgan mountains. Click on pins to view mountain details. The mountain guide has 20 mountains listed in Glamorgan, Wales. Barry Island Beacons Down Caia Hill Cock Hill Craig Llysfaen Craig y Llyn Craig y Llyn (boundary) Hensol Park Lillypot Mynydd y Fforest Old Castle Down Palla Hill Park Wood Hill Penarth Head Hill Penllyn St Mary Hill Down Swanbridge Hill Tair Onnen Wenvoe Hill Wick Hill