[1] The municipality of San Javier is located in the extreme southwest of the Sierra El Aliso, 25 kilometres (16 mi) west of the Yaqui River.

[6] At higher elevations the range holds oak and pine trees, while lower down there is underbrush, some cacti, grass and small shrubs.

[7] The sierra contains the village of San Antonio de la Huerta, with about 500 people in 1990, mostly engaged in mining, cattle ranching and agriculture.

[6] The Sierra El Aliso is near the center of the Mojave-Sonora Megashear, where both deep water Paleozoic deposits and miogeoclinal shelf facies are found.

[1] Middle Mississippian fossils in the Sonora allochthon have been found in the Sierra El Aliso.