The Battle of Grand Gulf was fought on April 29, 1863, during th: Scotland accounts for 32 per cent of the UK, covering 30,410 square miles (78,772 km2).[152] This includes nearly 800 islands,[153] notably the Hebrides, Orkney Islands and Shetland Islands. Scotland is the most mountainous constituent country of the UK, the Highlands to the north and west are the more rugged region containing the majority of Scotland's mountainous land, including the Cairngorms, Loch Lomond and The Trossachs and Ben Nevis which at 1,345 metres (4,413 ft)[154] is the highest point in the British Isles.[155]