four buildings), Campo Lima (Campo Corrals) (one building) and Arroyitos (four buildings). At the southern tip, on Melpómene Cove, there is a weather station staffed by a detachment from the Mexican Ministry of the Navy. The site is called Campamento Sur ("South Encampment"). Campo Bosque was established as a temporary camp in 1999 in the cypress forest in the north. The camp houses members of the Cooperative Farming Society "Francisco Javier Maytorena, S.C. of R.L." and removes goats from the island and sells them in the State of Sonora, with permission of Secretariat of the Environment and Natural Resources (SEMARNAT) and the support of the Secretariat of the Navy. Campo Pista is located at the small airport, near the center of the island (, elevation: 592 m, direction: 05/23). Airport Isla Guadalupe (ICAO Code MMGD) has a runway. At the end of the runway near threshold 5 is the wreckage of a Lockheed Model 18 Lodestar, which overshot the runway during landing. A North American B-25J-30/32 Mitchell, BMM-3501 (c/n 44-86712), bomber wrecked on the opposite end of the runway, after suffering serious damage in trying to take-off overloaded (). The B-25 wreckage was removed between October 2005 and June 2006. Because Guadalupe Island is located within a biosphere reserve, anyone visiting the island must obtain a permit from the Mexican government; this means the communities on the island are closed towns. Geology Guadalupe Island has a rugged landscape composed of two shield volcanoes which formed on a now extinct mid-ocean ridge. They are overlain by lava flows and cinder cones that were emplaced along northwest-southeast and northeast-southwest trending fissure vents. The youngest shield volcano comprises the northern end of the island and may have formed during the Holocene epoch. A series of very fresh-looking alkali basalt flows along with trachyte domes in the northern shield volcano caldera represent the most recently formed rocks on Guadalupe Island. Geography The island measures north-south and up to east-west, with a total area of . It features a chain of high volcanic mountain ridges which rises to a height of at its northern end (Mount Augusta). Its smaller counterpart on the southern end is the El Picacho. The southern part of the island is mostly barren, but there are scattered stands of trees at higher elevations of the northern part of the island and in the Twin Canyon area on the northeast coast. The