Volcanoes in the region of Turbaco, from 'Vues des Cordillieres et Monumens des Peuples Indigenes de l'Amerique' by Alexander de HumboldtbyLouis de Rieux
Humboldt, a German naturalist and explorer and the botanist Bonpland carried out a major scientific expedition to South and Central America (1799-1804); Friedrich Wilhelm Heinrich Alexander von Humboldt;