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.
Nacimiento Mountains orographic precipitation than many other New Mexico mountains, as there are no higher ranges upwind for a considerable distance. Accordingly, the trails in the wilderness area are frequently soft and soggy for much of the year. San Gregorio Lake, an artificial lake at the south end of the wilderness, is a popular location for fishing. The name "Nacimiento" means literally "birth" or "the Nativity" but also "source of a river." The latter meaning applies here since the Rio Puerco has its source on the west side of the mountains. Nacimiento Mountains The Sierra Nacimiento (official name), or Nacimiento Mountains, are