Squatting on a headland above gorgeous Trecastle Bay, 2 miles south of the village, Barclodiad y Gawres (The Giantess' Apronful) is the largest Neolithic tomb in Wales. When it was excavated in the 1950s, archaeologists were excited to find five standing stones inside, decorated in spirals and zigzags similar to those found in Ireland's Boyne Valley, along with the cremated remains of two men.
Due to problems with vandalism the entrance to the mound is now blocked by an iron gate, but you can still peer into the murky space. If you're keen to get inside, call ahead to the staff at Wayside Stores (1 mile up the road) to make an appointment during the allotted opening times and they'll send someone down to open up.