species ranging north out of the Sierra Madre Occidental cordillera. (One sought after example is the elegant trogon species.) The highest peak, Pajarito Peak, is located at . The Tumacacori Highlands The Tumacacori Highlands is a series of connected mountain ranges in western Santa Cruz County, Arizona. The Highlands are northwest of Nogales and are bordered on the east by the Santa Cruz River Valley, that is traversed north-south by Interstate 19. Across the valley eastwards are the tall Santa Rita Mountains in the northeast, and the smaller San Cayetano Mountains, east and adjacent to Nogales's northeast. The sequence of the north-to-south Tumacacori Highlands is as follows: North-to-south: Tumacacori Mountains Peck Canyon (Peck Canyon Road) Atascosa Mountains (6 mi x 9 mi) Ruby Road (to Ruby, Arizona); Peña Blanca Lake Pajarito Mountains Mexico-Arizona border Sierra La Esmeralda (the Emerald Mountains) A Santa Cruz county-border "bootheel" extends southwest; the bootheel contains Cobre Ridge, and it is connected northwest to a small range, the San Luis Mountains which are in the southeast of the Altar Valley, and borders the Buenos Aires National Wildlife Refuge. Historical mission communities, at Tumacacori National Historical Park, in Tumacacori lie at the southeast foothills of the Tumacacori Mountains. See also List of mountain ranges of Arizona References Arizona Highways. Emerald Isle, Terry Greene Sterling, photography, Jack Dykinga, February, 2010, p 40-43. External links Pajarito Mountains, at MountainZone from "BirderNaturalist", Bartolo Canyon, Atascosa Mountains Elegant Trogon locales: Huachuca, Atascosa, Patagonia, Santa Rita, Chiricahua, and Pajarito Mountains Madrean Sky Islands mountain ranges Mountain ranges of Santa Cruz County, Arizona Mountain ranges of Arizona Mountain ranges of Mexico