The Pinacate Biosphere Reserve is a protected area located in northwestern Mexico, near the border with the United States. It encompasses a diverse landscape of volcanic formations, desert ecosystems, and unique wildlife. The reserve is part of the larger Pinacate and Gran Desierto de Altar Biosphere Reserve, which was designated a UNESCO World Heritage Site in 2013. This biosphere reserve is home to various species, including the endangered Sonoran pronghorn and numerous migratory birds. The area features striking geological formations, such as craters and lava fields, making it a significant site for both ecological research and tourism.