The Turks and Caicos Islands, a British overseas territory comprising 40 islands and cays, lie at the southwestern end of the Bahamas chain, 575 miles southeast of Miami and 90 miles north of the island of Hispaniola. The Islands are generally flat, with rolling hills. The highest elevation is approximately 250 ft at Blue mountains on Providenciales. There are two distinct island groups separated by the Turks Island Passage – Provo is the best-known island within the larger Caicos Islands, while Grand Turk holds the same title among the Turks Islands and is home to the capital of the country. As home to the third largest barrier reef system in the world, the Turks and Caicos Islands are renowned for exceptional diving, with many of its vibrant coral heads just minutes from the shoreline. The island of Providenciales, known as Provo, is the most developed of the island, known for its fine white sand beaches and clear blue water.