Teide (volcano, App. Teide) - this is the main attraction of the island of Tenerife (Canary Islands), admired Columbus, Darwin and Captain Cook would always try to visit the tourists who come to Tenerife. The top of the volcano rises majestically over the island, it can be seen from any point of Tenerife. It is he who is depicted on the coat of arms of Tenerife and is its symbol. Title Teide in the language of the Guanches means "Snow Mountain", is a modern Spanish name of the volcano, to the Spanish colonization of the Canary Islands, Guanche, called Volcano Echeyde. The first eruption occurred supposedly 150,000 years ago , as a result of Las Canadas caldera was formed , its size is 16x9 km . Volcano itself and Pico Viejo stratovolcano , is located in the north of the caldera. The first documented eruption refers to 1442 , his witness was Christopher Columbus . Since being accurate statistics eruptions. In 1706, during another eruption destroyed the city and port of Garachico . Residents of the city are not affected, they managed to leave the city. He was later rebuilt , but most of the port did not, after the eruption changed the shoreline , making the bay unsuitable for passing ships. As a result of the eruption , the crater of a volcano collapsed and it its present appearance - before that it was much higher , its height is 5000 meters. Its last eruption was in 1909, in the north- western part. At present, Teide is an active volcano and the island of Tenerife is a seismically dangerous areas. In 2003 , seismologists have recorded increased activity in the crater of the volcano. Many well-known volcanoes, had a similar seismic activity before to get out of the resting stage . Typically, it indicates that it rises magma . If you analyze the statistics , we can see the regularity that the eruption of Mount Teide occur with a periodicity of once every hundred years, usually an error of not more than 5 years.