El Teide volcano is located in the centre of the island of Tenerife and can be seen from most of the coastline. The formation of El Teide began around 170,000 years ago. At 3,715 metres, it is the highest peak in Spain and the third highest in the Atlantic, after the two volcanoes in Hawaii.
Teide is what is known as a stratovolcano, meaning that it is made up of several layers of hardened lava. This type of volcano is characterised by cones on the flanks of the main mountain.
Around the summit of Teide, there are what Canary Islanders call "pico" volcanoes. The "Pico de Cabras", the "Pico Viejo" and the " Montaña Blanca " were created during volcanic eruptions, when the lava lifted the earth to gush out.
Teide is a volcano that formed during the destruction of the previous volcano, apparently much larger judging by the size of the crater, which is why it nestles in the hollow of what geologists call a caldera, an often circular form of destruction created by volcanic activity itself.