<P> If measured from the ocean floor , it is at 7,500 m ( 24,600 ft ) the highest volcano in the world base - to - peak outside of the Hawaiian Islands , and is described by UNESCO and NASA as Earth 's third - tallest volcanic structure . Teide 's elevation makes Tenerife the tenth highest island in the world . Teide is an active volcano : its most recent eruption occurred in 1909 from the El Chinyero vent on the northwestern Santiago rift . The United Nations Committee for Disaster Mitigation designated Teide a Decade Volcano because of its history of destructive eruptions and its proximity to several large towns , of which the closest are Garachico , Icod de los Vinos and Puerto de la Cruz . Teide , Pico Viejo and Montaña Blanca form the Central Volcanic Complex of Tenerife . </P>
<P> If measured from the ocean floor , it is at 7,500 m ( 24,600 ft ) the highest volcano in the world base - to - peak outside of the Hawaiian Islands , and is described by UNESCO and NASA as Earth 's third - tallest volcanic structure . Teide 's elevation makes Tenerife the tenth highest island in the world . Teide is an active volcano : its most recent eruption occurred in 1909 from the El Chinyero vent on the northwestern Santiago rift . The United Nations Committee for Disaster Mitigation designated Teide a Decade Volcano because of its history of destructive eruptions and its proximity to several large towns , of which the closest are Garachico , Icod de los Vinos and Puerto de la Cruz . Teide , Pico Viejo and Montaña Blanca form the Central Volcanic Complex of Tenerife . </P>
when was the last time the volcano erupted in tenerife
when was the last time the volcano erupted in tenerife
1909
1909