The range includes a number of hills possessing Iron Age hillforts, including (from the north) Y Foel (Moel Hiraddug), Moel-y-gaer, Penycloddiau, Moel Arthur, a second Moel y Gaer and Foel Fenlli. There are, as with many places in the west of Britain, a number of legends associated with King Arthur surrounding these hills. There are a number of tumuli and cairns on the hills.