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.
Little Burro Mountains route after skirting the northeast of the Cedar Mountain Range, it passes across the water divide of the north Playas Valley, west of Hachita. It finally enters a series of north-south ranges, including the Animas Mountains, and travels south into northwest Chihuahua, Mexico. Little Burro Mountains The Little Burro Mountains are a short 15 mi (24 km) long, mountain range located in Grant County, New Mexico. The range lies adjacent to the southeast border of the larger Big Burro Mountains. The Little Burro Mountains are located 8 mi southwest of Silver City. State Road 90 from Silver City skirts the