Montserrat is a British Overseas Territory (BOT) in the Caribbean. The island is in the Leeward Islands, which is part of the chain known as the Lesser Antilles, in the West Indies. Montserrat measures approximately 16 km (10 mi) in length and 11 km (7 mi) in width, with approximately 40 km (25 mi) of coastline. Montserrat is nicknamed "The Emerald Isle of the Caribbean" both for its resemblance to coastal Ireland and for the Irish ancestry of many of its inhabitants.