Commonwealth Bay is an open bay about 30 miles wide at the entrance between Point Alden and Cape Gray. Discovered in 1912 by the AAE under Douglas Mawson, who established the main base of the expedition at Cape Denison at the head of the bay. Named by AAE after the Commonwealth of Australia. It is listed in both the Guinness Book of World Records and the Eighth Edition National Geographic Atlas as the windiest place on Earth with winds regularly exceeding 150 miles per hour.