Rongelap Atoll (Marshallese: , ) is a coral atoll of 61 islands (or motus) in the Pacific Ocean, and forms a legislative district of the Ralik Chain of the Marshall Islands. Its total land area is . It encloses a lagoon with an area of . It is historically notable for its close proximity to US hydrogen bomb tests in 1954, and was particularly devastated by fallout from the Castle Bravo test. The population was forcibly removed from Rongelap following the test due to high radiation levels, and later studied due to their exposure to radiation. However, according to the most recent census in 2011 it has begun to recover with about eighty people living on the atoll. History The Marshall Islands, of which Rongelap Atoll is a part, were first settled by Micronesians. The first sighting recorded by Europeans was by Spanish navigator Álvaro de Saavedra on 1 January 1528. Together with Utirik, Ailinginae and Toke atolls, they were charted as Islas de los Reyes (Islands of the Three Wise Kings in Spanish) due to the proximity of Epiphany. Fourteen years later it was visited by the Spanish expedition of Ruy López de Villalobos. Rongelap Atoll was claimed by the Empire of Germany along with the rest of the Marshall Islands in 1884, and the Germans established a trading outpost. After World War I, the island came under the South Seas Mandate of the Empire of Japan. The base became part of the vast US Naval Base Marshall Islands. Following the end of World War II, Rongelap came under the control of the United States as part of the Trust Territory of the Pacific Islands. Nuclear testing impact Time line 1946: United States Navy evacuates Bikini Atoll Islanders prior to nuclear weapons tests. March 1, 1954: United States detonates 15-megaton hydrogen bomb (Castle Bravo test) allegedly unaware that fallout will reach Rongelap. These claims are made for tort-liability prevention purposes only. Ralph Lapp cites in his 1955 paper Global Fall-out, that, by measuring roentgen doses, the yield of the devices are calculated. March 3, 1954: US evacuates Rongelap inhabitants to Kwajalein Atoll. Islanders have vomiting, diarrhea, skin burns, and some later experience hair loss. They were suffering from acute radiation syndrome. 1955-1957: Internally displaced Rongelapese inhabitants repeatedly request permission from the US Government to return to their atoll. 1957: Atomic Energy Commission declares Rongelap safe for re-habitation. US scientists