SANTA CRUZ DE TENERIFE, Wednesday March 31 2010 THE SIXTH international Cities on Volcanoes conference will be held in Puerto de la Cruz this summer, it was announced on Wednesday. by JAMES TWEEDIE Tenerife's Cabildo government and the Institute of Technology and Renewable Energies (ITER) will host the meeting of the Cities and Volcanoes Commission (CaV) and the International Association of Volcanology (IAVCEI) in the north coast town from May 31 to June 4. The conference will discuss the implications and hazards of living on or near an active volcano, along with the potential to harness the natural resources that come with it. The seven Canary Islands are merely the tips of enormous submarine volcanoes. Tenerife's Mount Teide – which the indigenous Guanches believed to be the home of their devil Guayota – is dormant but not extinct. Its last eruption was from the El Chinyero vent on the mountain's flank in 1909. El Teide is one of the 16 'Decade Volcanoes' named a