CEREDIGION, WALES—Part of the medieval entrance to the tower at Cardigan Castle has been unearthed as part of the renovation project intended to reopen part of the castle to the public. The top of the archway was found when workmen removed floorboards to Castle Green House, a Georgian-era structure. “Building works revealed a possible entrance into the medieval tower which forms the back of the existing house. The entrance is formed by an opening capped by the vaulted ceiling of the basement, flanked by massive stone walls which form parts of the south wall of the medieval tower,” project manager Nigel Page explained to BBC News. The excavations at the castle have also recovered more than 9,000 artifacts, including iron arrowheads and a dolphin skull.