Descripción: UNESCO, MAB Biosphere Reserves Directory.
«The Juan Fernandez Biosphere Reserve is situated 650 km from the Chilean coast in the Pacific Ocean. It includes the whole Archipelago with the islands of Robinson Crusoe, Alexander Selkirk and Santa Clara and all the islets in the area. The Juan Fernandez Archipelago is volcanic in origin, with steep, rugged mountain ranges with deep ravines. There are practically no flat areas. Various types of lava are found, some 400 metres in depth.»