Chachani is a volcanic group in southern Peru, 22 kilometres (14 mi) northwest of the city of Arequipa. Part of the Central Volcanic Zone of the Andes, it is 6,057 metres (19,872 ft) above sea level. It consists of several lava domes and individual volcanoes such as Nocarane, along with lava shields such as the Airport Domes. Underneath Chachani lies a caldera.
During the Pliocene and early Pleistocene, the volcanic group produced large ignimbrites such as the La Joya, Arequipa Airport and Yura Tuff ignimbrites; afterwards the volcanic group proper grew in the caldera until about 56,500 years ago. There have not been any eruptions during historical time, but the volcano is considered to be only dormant and due to its closeness to the city of Arequipa is considered high risk.
There's a demading hiking trail (T3) leading to the summit.
By elevation Chachani is
# 7 out of 2757 in Arequipa # 1 out of 291 in Arequipa # 41 out of 21468 in Peru # 1 out of 67 in Salinas y Aguada Blanca National Reserve # 56 out of 39148 in the Andes (Bolivia, Peru, Ecuador, Colombia, Venezuela)
By prominence Chachani is
# 3 out of 2757 in Arequipa # 1 out of 291 in Arequipa # 9 out of 21468 in Peru # 1 out of 67 in Salinas y Aguada Blanca National Reserve # 27 out of 39148 in the Andes (Bolivia, Peru, Ecuador, Colombia, Venezuela)
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