This uninhabited island was claimed by the US in 1857 for its guano. Mining took place between 1865 and 1898. The lighthouse, built in 1917, was shut down in 1996 and administration of Navassa Island transferred from the Coast Guard to the Department of the Interior. A 1998 scientific expedition to the island described it as a unique preserve of Caribbean biodiversity; the following year it became a National Wildlife Refuge and annual scientific expeditions have continued.
strategic location 160 km south of the US Naval Base at Guantanamo Bay, Cuba; mostly exposed rock with numerous solution holes (limestone sinkholes) but with enough grassland to support goat herds; dense stands of fig trees, scattered cactus
unorganized, unincorporated territory of the US; administered by the Fish and Wildlife Service, US Department of the Interior from the Caribbean Islands National Wildlife Refuge in Boqueron, Puerto Rico; in September 1996, the Coast Guard ceased operations and maintenance of Navassa Island Light, a 46-meter-tall lighthouse on the southern side of the island; there has also been a private claim advanced against the island