Mumbles Hill is a hill near the south eastern tip of the Gower Peninsula, Wales. 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. However there are information boards marking the spot. External links City and County of Swansea: Mumbles Hill BBC South West Wales: Mumbles Hill Local Nature Reserve Swancam: Mumbles Hill World War II Coastal Defence Battery 299 on Mumbles Hill - including a link to Anti-Aircraft Battery maps & plans A History of Mumbles: by Oystermouth Historical Association, 'Mumbles Hill, A Ramble Through Time', from prehistory to the present day Nature reserves in Swansea Gower Peninsula Mountains and hills of Swansea