Tacora, Dormant stratovolcano in northern Arica y Parinacota Region, Chile.

Tacora is a 5,980-metre stratovolcano in Chile's Arica y Parinacota Region, about 100 km northeast of Arica. Its summit caldera opens northwest and holds a 500-metre-wide crater below the caldera scarp. Steep lava flows, lava domes and pyroclastic material form the cone, which rises about 1.7 km above the surrounding terrain and shows a sector-collapse scar on its southeastern flank.

Mining began on the volcano during the 1800s, focusing on sulfur extraction from its slopes and crater area. Processing works were built on the mountain to handle the extracted material during this period.

Local communities view the mountain as an important landmark that shapes their relationship with the Andean landscape. The peak serves as a reference point in their daily life and connection to the highland region.

Access is by unpaved road that requires four-wheel drive vehicles, starting from the nearby settlement of Chislluma. The route gains over 1,300 meters of elevation and can be rough, so checking conditions beforehand is recommended.

Tacora's fumaroles reach temperatures of 82–93 °C, and their gases are mostly water vapour with carbon dioxide, hydrogen chloride, hydrogen fluoride, hydrogen sulfide and sulfur dioxide. Geyserite cones on the mountain show that geysers were formerly active there. In 2009 Chile's Ministry of Mining recorded bids for geothermal development at Tacora, and one bid was approved in early 2010.