Tenerife consensus among geographers about them: The Flag of Tenerife was originally adopted in 1845 by the navy at its base in the Port of Santa Cruz de Tenerife. Later, and at present, this flag represents all the island of Tenerife. It was approved by the Cabildo Insular de Tenerife and the Order of the Government of the Canary Islands on 9 May 1989 and published on 22 May in the government report of the Canary Islands and made official. The coat-of-arms of Tenerife was granted by royal decree on 23 March 1510 by Ferdinand the Catholic at Madrid in the
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