Devil's Island (French: île du Diable) is the third largest island of the Îles du Salut island group in the Atlantic Ocean. It is located approximately 14 km (9 mi) off the coast of French Guiana in South America just north of the town of Kourou. It has an area of 14 ha (34.6 acres). The island was a part of the controversial French penal colony of French Guiana for 101 years, from 1852 to 1953, but in spite of its being the smallest part of the penal colony, it is the most famous due to its use for the internal exile of political prisoners. The most famous political prisoner on Devil's Island was Captain Alfred Dreyfus.