The Hoggar Mountains (Arabic: جبال هقار (Ǧibāl Haqqār), Berber: idurar n Ahaggar) are a highland region in the central Sahara in southern Algeria, along the Tropic of Cancer.

[2] The tallest peak in the range and Algeria, Mount Tahat, is located in the park area, which covers approximately 450,000 square kilometres (170,000 sq mi).

[1] Several of the more dramatic peaks, such as Ilamen, are the result of erosion wearing away extinct volcano domes, leaving behind the more resistant material that plugged the volcanic cones.

Slightly to the west of the Hoggar range, a population of the endangered African wild dog (Lycaon pictus) remained viable into the 20th century, but is now thought to be extirpated within this entire region.

[8] A single cheetah was filmed and photographed by Algerian naturalists in 2020 in the national park in the Atakor volcanic field whose peaks approach a height of 3,000 metres (9,800 ft).

[2] The park has been designated an Important Bird Area (IBA) by BirdLife International because it supports significant populations of spotted, crowned and Lichtenstein's Sandgrouse, Pharaoh eagle-owls, pallid harriers, greater hoopoe-larks, bar-tailed and desert larks, pale rock martins, fulvous babblers, white-crowned and mourning wheatears, desert sparrows and trumpeter finches.