Loch Lomond is a large freshwater LOCH located in the Scottish Highlands. It is the largest lake in Britain by surface area and is one of the most famous lochs in Scotland. The LOCH is also known for its islands, including Inchmurrin, the largest island in a British LOCH. LOCH Lomond is also home to the popular song 'The Bonnie Banks o' LOCH Lomond'. The phrase 'Lomond is one' is a reference to the fact that LOCH Lomond is the largest lake in Britain.