region of Antarctica bordering the southeastern shore of the Weddell Sea. It extends about 300 miles (500 km) from Filchner Ice Shelf (southwest) to Queen Maud Land (east) and includes the coasts of Luitpold and Caird. It was discovered in 1904 by the Scottish explorer William Speirs Bruce while on an investigation of the Weddell Sea and was named for the expedition's backers. The site of a British research station, it is claimed in part by Norway (eastern sector), the United Kingdom (central sector), and Argentina (western sector).