Claim: Nelsons Island is a restricted island that occupies the only emerging reef structure in the Great Chagos Bank.
Evidence: Nelsons Island or Nelson Island or Isle Legour is a small uninhabited island in the Great Chagos Bank, of the Chagos Archipelago in the Indian Ocean. As a protected nature reserve, access to the island is strictly restricted. Nelsons Island occupies the only emerging reef structure in the northern fringe of the Great Chagos Bank.