Pico Viejo is a volcano located on the island of Tenerife (Canary Islands, Spain). It is the second highest peak of Tenerife and the Canary Islands (after the Teide) with a height of 3,135 m above sea level, a huge crater approximately of 720 metres in diameter.
It erupted in 1798, and it is estimated (by whom?) that it ejected around 12 million m3 of lava over three months forming a black coloured surface, which is different from the rest of the volcano area, which are known as the Teide noses.
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