Natural Heritage of the Peloncillo Mountain Region
The Peloncillo Mountains and its surrounding valleys, ranges and drainages anchor the center of the Sky Island region—a region of the southwestern United States and northwestern Mexico characterized by isolated mountain ranges separated by desert and grassland. The Peloncillo region is in a unique geographic position that has shaped its rich natural and cultural heritage. It straddles the Arizona and New Mexico boundary in the United States, crosses the international boundary and straddles the Sonora and Chihuahua border in Mexico.