The island was discovered in 1461 or 1462 by Diogo Afonso, together with the islands of São Vicente and Santo Antão.[2]: 73 It was first settled in the seventeenth century. The settlement Porto de Lapa was abandoned in 1653 due to pirate attacks, and the town Ribeira Brava was founded in the interior.[3]: 16 It was the seat of the Roman Catholic Diocese of Santiago de Cabo Verde between 1786 and 1943.[3]: 28 The roadstead of Tarrafal de São Nicolau became an anchorage for whaling ships in the 19th century. It is now the largest settlement of the island.[4]: 14–16
Geography
The mountainous island is mostly agricultural but is subject to droughts, especially in the lower lying areas. The highest point on the island is Monte Gordo (1,312 m), in the western half of the island.[4]: 20 The eastern part is a chain of lower mountains, including Monte Bissau and Pico de Alberto.
Administrative divisions
The island is divided in two municipalities, which are subdivided into civil parishes: