Loch Lomond is a freshwater Scottish loch which crosses the Highland Boundary Fault. It is the largest inland stretch of water in Great Britain by surface area. The loch contains many islands, including Inchmurrin, the largest fresh-water island in the British Isles. Loch Lomond is a popular leisure destination and is featured in the song "The Bonnie Banks o' Loch Lomond". The Loch is now part of the Loch Lomond and The Trossachs National Park which was established in 2002. Loch Lomond is a corruption of the Gaelic Lac Leaman, or 'Lake of the Elms'.GeographyLoch Lomond is a freshwater loch lying on the Highland Boundary Fault, often considered the boundary between the lowlands of Central Scotland and the Highlands. It is 24mi long and between 0.75and wide. It has an average depth of about 121ft, and a maximum depth of about 620ft. Its surface area is 27mi2, and it has a volume of 2.6km3. Of all the lochs and lakes in Great Britain, it is the largest by surface area and the second largest (after Loch Ness) by water volume. Within the United Kingdom, it is surpassed only by Lough Neagh and Lough Erne in Northern Ireland and regarding the British Isles as a whole, there are also several larger loughs in the Republic of Ireland.