Saunders Island is a crescent-shaped island 8.8 km (5.5 mi) long, lying between Candlemas Island and Montagu Island in the South Sandwich Islands, a part of the United Kingdom. It is a volcanic island composed of an active stratovolcano, 990-metre (3,248 ft) Mount Michael, (Named by Commander William Melvin Carey of the Discovery II, after his son Michael Carey).