Volcán Isluga National Park, Nature reserve in Provincia del Tamarugal, Chile.

Volcán Isluga National Park covers Andean terrain with volcanoes, lakes, and mountains ranging from 2,100 to 5,550 meters in elevation. The landscape changes dramatically with altitude, creating distinct ecological zones from lower valleys to high-altitude peaks.

The park was established in 1967 by the Chilean government to protect the region's high-altitude ecosystems and volcanic features. This creation preserved an important area with its geological formations and geothermal resources.

The park holds the cultural heritage of the Aymara people, and several ceremonial towns lie within its boundaries, among them Isluga. Visitors pass through settlements where the Aymara keep their own rites and calendar. The park also protects guanacos, vicuñas, llamas and alpacas, the camelids herded across this altiplano.

Access is via the paved Ruta 15-CH between Iquique and Colchane, 190 km from Iquique and 20 km from Colchane. The park averages 4,000 m in altitude, with annual rainfall of 50 to 250 mm falling mostly from December to March and temperatures between 10 and -5 °C. The Puchuldiza thermal waters reach 85 °C.

The Puchuldiza geothermal field contains geysers and thermal springs reaching 85 degrees Celsius. In winter, the hot water creates ice formations when it rapidly cools, producing an unusual contrast of heat and cold.