Every year two million
people are attracted to this mountain, which stands 3,718 metres above
sea level at its peak. The Guanches thought that the entire firmament
rested upon it. It is not an isolated peak, but rather a series of
volcanoes spread out in almost all directions. Its roots are banked
deep down in the crater known as Las Cañadas del Teide, with
a spiral shape and measuring almost 16 kilometres on its longest side.
El Teide was formed by successive volcanic eruptions, the last occurring
in 1798. A year later Alexander von Humboldt, a truly exceptional
traveller, descended into the crater far below a point any conventional
traveller had previously gone, and felt how the sulphurous gas tore
holes in his clothing. The Izana observatory systematically analyses
the chemical components of the air crossing el Teide, as well as checking
ozone levels and assessing the greenhouse effect. El Teide is a national
park of almost 19,000 hectares. |