Patagonia Mountains the Sonoran town of San Lazaro. The old mining camps and ghost towns of Mowry, Washington Camp, Harshaw, and Duquesne are located in the Patagonia Mountains. Nogales, Arizona, and Nogales, Sonora, are in the valley to the southwest of the mountain range. The San Rafael Valley and Canelo Hills are to the east of the Patagonia Mountains. The connected Santa Rita, Patagonia, and Sierra San Antonio ranges are part of the Madrean Sky Islands ecoregion, the sky island mountain ranges region on the north of the Sierra Madre Occidental, the major cordillera and mountain ecoregion of central-western and northwestern Mexico.
Peloncillo Mountains (Hidalgo County) safe haven ranges of northern Mexico. The highest peak is Gray Mountain at . The region is famous for Skeleton Canyon and the historical events that occurred there. The Baker Canyon Wilderness is located just south in the connected mountain range, the Guadalupe Mountains. Peloncillo Mountains (Hidalgo County) The Peloncillo Mountains of Hidalgo County, (Spanish language "pelo", hair, "pelón", hairless, bald; "peloncillo", Little Baldy), is a major long mountain range southwest of New Mexico's Hidalgo County, and also part of the New Mexico Bootheel region. The range continues to the northwest into Arizona as the Peloncillo Mountains of Cochise County,