Réunion's tourist attractions are not well known, and include its favourable climate and impressive scenery. The island's topography is very mountainous, with mountains that can be as high as 3,000 m (9,842 ft) close to the coast. The island has many natural tourist attractions, including Piton des Neiges (the highest point on the island), lava cliffs, and deep canyons. Another tourist attraction is the active shield volcano Piton de la Fournaise, one of the most active volcanoes in the world. The collapsed calderas of Cirque de Cilaos, Cirque de Mafate, and Cirque de Salazie also draw tourists. The Le Maïdo viewpoint is located at an altitude of 2,205 m (7,232 ft) and has excellent views of the coast. There is good surfing off the island's west coast.