The stratovolcanoes Teide and Pico Viejo (Old Peak, although it is in fact younger than Teide) are the most recent centres of activity on the volcanic island of Tenerife, which is the largest () and highest () island in the Canaries. It has a complex volcanic history. The formation of the island and the development of the current Teide volcano took place in the five stages shown in the diagram on the right.