Altar Valley

Altar Valley
Valley
typical Sonoran Desert bajada lands (from Kitt Peak, Quinlan Mountains, NW valley)
Country	United States
State	Arizona
Region	(northeast)-Sonoran Desert
District	Pima County, Arizona
Borders on	Quinlan Mountains-NW Baboquivari Mountains-SW
City	Robles Junction, AZ-N Sasabe, AZ-S
Coordinates	31°49′N 111°24′W / 31.82°N 111.40°W / 31.82; -111.40Coordinates: 31°49′N 111°24′W / 31.82°N 111.40°W / 31.82; -111.40
Highest point	Baldy Peak (Sierrita Mountains) (southwest Black Hills (Sierrita Mountains))
- location	(southwest)-Sierrita Mountains
- elevation	4,120 ft (1,256 m)
Length	45 mi (72 km)

The Altar Valley is a 45-mile (72 km) long north-south valley, trending slightly northeast from Sasabe, Arizona on the Mexico border to the Avra Valley west of the Tucson Mountains. It is delimited by Arizona State Route 86, from east-to-west on the north separating it from the Avra Valley which then trends northwesterly, merging into the plains and drainage of the Santa Cruz River.

The valley is traversed from north to south by Arizona Route 286.

The major Baboquivari sky island range borders the valley on the west; the east is bordered by a series of mountain ranges, that have Nogales, Arizona nestled in between at the United States-Mexico border. Two wilderness areas lie to the west of the valley, the Coyote Mountains Wilderness east of Kitt Peak Observatory, and the Baboquivari Peak Wilderness.

The center of the valley is near Baldy Peak (31°50′46″N 111°20′06″W / 31.8462°N 111.3351°W / 31.8462; -111.3351 (Baldy Peak (Sierrita Mountains))) in the southwest Sierrita Mountains. Baldy Peak's height is 4,120 feet (1,256 m).