University of Tarapaca
| Lauca National Park, Chungara Lake, Pomerape, Cotacotani Lake, Socoroma|
The XV Arica and Parinacota Region (Spanish: ) is one of Chiles 15 first order administrative divisions. It borders Peru to the north, Bolivia to the east and Chiles Tarapaca Region to the south. It is also the countrys newest region, created under Law 20.175. It became operational on October 8, 2007. Chiles former Tarapaca region was a former Peruvian province, which was occupied by Chile under the 1883 Treaty of Ancon at the close of the War of the Pacific, and then formally annexed in 1929 by the Treaty of Lima.
The region lies within the Norte Grande (Far North) natural region. It combines deserts, green valleys, the steep and volcanic Andes mountains, and the Altiplano (high plain) to the east. A narrow coastal strip of low-lying land no more than 2 kilometres (1 mi) wide separates the Pacifics Nazca plate from the Andes. Its Parinacota volcano is the regions highest elevation at 6,348 metres (20,827 ft) and lies on the northern border with Bolivia in Lauca National Park.