Santo Antão is one of the nine inhabited islands of Cape Verde, located in the Barlavento group in the northwest, and the second largest in the archipelago on the surface and the third in population, approximately 40 km long and 20 km wide.
Of volcanic origin, Santo Antão is the most northerly and westernmost island of Cape Verde and the furthest from the African continent, reason why its extreme west is considered the most western point of Africa. The São Vicente canal separates it from the nearest island, the island of São Vicente.
Uninhabited when it was discovered in 1462 by Portugal, it began to be colonized, with little success, in 1548. A chain of mountains, long regarded as insurmountable, separates the island between north and south. The main population clusters are the city of Ribeira Grande and the city of Porto Novo – entrance and exit of people and goods.