Canary Islands, as well as the island of Madeira, the Azores and the Cape Verde Islands are of volcanic origin. On each island of Canary Islands you can watch different tracks and signs of volcanic activity: scoria cones, fissure volcanoes, craters of different sizes, lava flows. Most impressive scenery formed the Collapses volcano on Tenerife island at 2,000 m, ie Las Cañadas caldera, in the center of which stands the volcano Teide. The word “caldera”, which geologists call the falls of this type, having the form of almost perfect circle and is often located at a considerable height, was born in the Canary Islands.