Leaders	José Antonio Rodríguez Losada   Email: jrlosada@ull.es Rodrigo del Potro   Email: R.delPotro@bristol.ac.uk
Cost	Included in the registration fee. Included: Transportation by chartered bus, cable car tickets, snack lunch and beverages.
Description	The Las Cañadas caldera is an elliptical depression measuring 16x9 km, with a maximum depth of 600 m below the top of the caldera wall at Guajara Mountain (2717 m). A long NNW-SSE alignment of cliffs (Roques de Garcia) splits the caldera into two main parts: the eastern and the western depressions being the western 150 m deeper than the eastern one. The caldera wall is visible along 27 km in the SW, SE, E and NE sectors, being partially open to the North. This depression has been partially infilled by the products of the Teide-Pico Viejo stratovolcano, with a maximum altitude of 3718 m. The caldera seems to be derived from the partial destruction of a NNE-SSW elongated Cañadas edifice whose height could have reached 3000 m. The main structural features of the Las Cañadas caldera consist of radial intrusions, cone sheets, vertical concentric dike systems and faults of concentric and radial patterns. The origin of the Las Cañadas caldera is a matter of a heated debate. Two main hypotheses are confronted to explain the origin of the caldera: a) lateral sector collapse to the north by landslide processes and b) various caldera-forming episodes by vertical collapses into a magma chamber.