A network of national parks in the Canary Islands attempts to conserve their most characteristic ecosystems. Hence, the Mt. Teide National Park, in the centre of the island of Tenerife, shelters the best examples of the supra-Mediterranean vegetation level. On the other hand, with an average altitude of over 2,000 metres, the Mt. Teide National Park offers one of the most spectacular examples of vulcanism in the world and represents the best example of alpine volcanic ecosystem in the Canary Islands .../