Mahé Island

Largest island of the Seychelles archipelago, Republic of Seychelles, in the western Indian Ocean. The island is 4 miles (6 km) wide and 16 miles (26 km) long and has an area of 57 square miles (148 square km). The island is granitic in origin and mountainous; the highest peak is Morne Seychellois, which rises to 2,969 feet (905 m) and forms part of a national park of the same name. Port Launay Marine National