Long before the Normans began their extensive castle-building program, which ultimately resulted in the subjugation of Wales (at least in theory), the promontory site now occupied by modern Aberystwyth was recognized for its defensive qualities. Iron Age settlers fortified the hilltop called Pen Dinas with a huge fortification, one of the largest Iron Age hillforts in the region. Today that hillfort dominates the skyline as you approach Aberystwyth from the south. Not only does it create an air of mystery, it also reminds us of the skills of its ancient builders. It remains a remarkable testimony to the Iron Age people that they could construct such a formidable hilltop fortification with their primitive technology. That it has survived over two thousand years makes their accomplishment all the more impressive.
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