El Pinacate Biosphere Reserve

El Pinacate and Gran Desierto de Altar Biosphere Reserve is a biosphere reserve and UNESCO World Heritage Site managed by the federal government of Mexico, specifically by Secretariat of the Environment and Natural Resources, in collaboration with the state governments of Sonora and the Tohono O'odham.

It is in the Sonoran Desert in northwest Mexico, east of the Gulf of California, in the eastern part of the Gran Desierto de Altar, just south of the border with Arizona, United States and north of the city of Puerto Peñasco. It is one of the most significant visible landforms in North America seen from space. A volcanic system known as Santa Clara is the main part of the landscape, including three peaks: Pinacate, Carnegie and Medio.