Mumbles Hill Nature Reserve

Mumbles Hill is a hill near the south eastern tip of the Gower Peninsula, Wales. The hill is notable for housing four large storage tanks tunnelled into its limestone rock as part of the Swansea Main Drainage Scheme constructed in the 1930s, which helped eliminate sewage pollution in Swansea Bay. Parts of the hill form a designated Local Nature Reserve, declared in 1991. Defensive gunnery positions were built on the hill in World War II. Remnants of the 623rd Anti-Aircraft Battery gun emplacements and control bunker are still visible on the hill. Coastal Defence Battery 299 had a site on a hill with 6 inch gun and underground magazines, though none of this remains on the hill. There are, however, information boards marking the spot.