A classic example is Crug Hywel (‘Howell’s Fort’), the flat-topped summit that looms above the little town of Crickhowell in the Bannau Brycheiniog (Brecon Beacons).
Un enghraifft glasurol yw Crug Hywel, y copa pen gwastad sy’n ymddangos uwchlaw tref fechan Crucywel ym Mannau Brycheiniog.