SA Site Cover: Pen Dinas Hill Fort, Aberystwyth by Lyn Pease
Pen Dinas Hill Fort, Aberystwyth Pen Dinas is the pre-eminent hillfort on the Cardigan Bay coast. The position of Pen Dinas allowed for visual command and political control of the two regional arterial rivers, with sweeping views both inland and also to the North and South of Cardigan Bay. This hour-glass shaped fort is situated on a ridge between the rivers Rheidol and Ystwyth. Two peaks are enclosed and it is clear that originally they were separate enclosures. At first the northern summit was surrounded by ramparts with a timber revetment and a ditch. Soon afterwards, the southern crest was more substantially fortified with a stone-faced rubble bank and ditch some 3m deep. There were entrances at the north and south with gates supported by posts. A period of decay or deliberate destruction may have followed before the southern fort was re-modelled. Eventually both forts were joined together with a new revetted wall across the saddle between the peaks, known as the Is