Mount Teide has altitude of 3718 m (7500 m from the calculation of the Atlantic ocean floor) and is the highest mountain in Spain and the Atlantic. Teide is also a natural protected area belong to the natural monument areas including Teide volcano, a Mount Vesuvius type volcano, in which is still active according to its not long eruption records (the last occurred in 1798), and often the gas emitted from the volcano.