Brough /brɒx/ is a small village in Caithness on the far north coast of mainland Scotland. It is the most northerly village of mainland Great Britain. It is 10 miles east of Thurso, 20 miles north-west of Wick, 200 miles north of Edinburgh, and 500 miles north of London. It is on the southern shore of the Pentland Firth, the sea channel between Caithness and the Orkney Islands, notorious for strong tidal currents and exceptionally violent sea conditions. Brough is located on the B855 single-track road, 2.5 miles south east of Dunnet Head Lighthouse, the most northerly lighthouse and point on mainland Britain. The neighbouring village of Dunnet and the wide sandy beaches of Dunnet Bay lie 1.6 miles to the south. Brough is within the civil parish of Dunnet. John o' Groats, the north-easterly point of the mainland, lies 10 miles to the east.