Conquest of the Canary Islands 'Infierno' in the 1385 "Libro del Conoscimiento". During the 1370s, when Portugal and Castile were engaged in dynastic wars following the assassination of Peter I of Castile, Portuguese and Castilian privateers were dispatched against each other, several of which made detours to the Canary islands for shelter or slave-raiding jaunts. Ignoring the 1344 bull, Ferdinand I of Portugal granted (in 1370) the islands of Lanzarote and La Gomera to the adventurer 'Lançarote da Franquia' (believed by some to be none other than the impossibly-aged Lanceloto Malocello). This Lanzarote made an attempt to seize the islands and is reported to have
Canary Islands third tallest volcano on Earth on a volcanic ocean island. All the islands except La Gomera have been active in the last million years; four of them (Lanzarote, Tenerife, La Palma and El Hierro) have historical records of eruptions since European discovery. The islands rise from Jurassic oceanic crust associated with the opening of the Atlantic. Underwater magmatism commenced during the Cretaceous, and reached the ocean's surface during the Miocene. The islands are considered as a distinct physiographic section of the Atlas Mountains province, which in turn is part of the larger African Alpine System division. In the summer of