Iceland is a sparsely populated North Atlantic island close to the Arctic Circle. It is one of the most volcanically active countries in the world, and is famous for its hot springs, geysers and whooper swans. Five-sixths of Iceland is uninhabited, the population being concentrated on the coast, in the valleys and in the plains of the southeast and southwest of the country. More than half of the population lives in or around Reykjavik, the capital. Iceland's highest and most extensive glacier is Vatnaj