This uninhabited island was claimed by the US in 1857 for its guano, and 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.
strategic location 160 km south of the US Naval Base at Guantanamo Bay, Cuba; mostly exposed rock, but enough grassland to support goat herds; dense stands of fig-like trees, scattered cactus