The highest point of the range is Colorado Peak (5,319 feet (1,621 m)).

The Las Guijas Mountains lie 12 km (7.5 mi) to the southwest.

Arivaca Junction in the Santa Cruz River valley lies 17.5 km (10.9 mi) due east.

The broad Altar Valley lies 15 km (9.3 mi) to the west with the Baboquivari Mountains beyond.

Early production was by the Sonora Exploration & Mining Company, which was then owned by Charles Poston and Samuel Colt.