Anglesey the island. The highest six are Holyhead Mountain, ; Mynydd Bodafon, ; Mynydd Llaneilian, ; Mynydd y Garn, ; Bwrdd Arthur, ; and Mynydd Llwydiarth, . To the south and south-east the island is separated from the Welsh mainland by the Menai Strait, which at its narrowest point is about wide. In all other directions the island is surrounded by the Irish Sea. It is the 51st largest island in Europe, and just five square kilometres smaller than Singapore. There are several small towns scattered around the island, making it quite evenly populated. The largest are Holyhead, Llangefni, Benllech, Menai
Salt Island, Anglesey of rails were still to be found amongst the large boulders deposited as the foundations for the inner arm. In more recent times, starting in February 2001, the island was expanded into the sea by the process of land reclamation. In total was gained at a cost of £10 million. An average of 7,000 tonnes of rock and mud was extracted per day during the process. Salt Island is part of the port of Holyhead and almost the whole extent of the island is used as a passenger, car and freight terminal and berths for ferries to and from Ireland.