Organ Mountains
| Organ Mountains | |
|---|---|
The Organ Mountains seen from the west | |
| Dimensions | |
| Length | 85 mi (137 km) N-S |
| Width | 24 mi (39 km) W-E |
| Geography | |
| Country | United States |
| State | New Mexico |
| Region | (northwest) Chihuahuan Desert |
| District | Doña Ana County, NM |
| Range coordinates | 32°19′48″N 106°35′24″W / 32.33000°N 106.59000°W |
| Borders on | San Andres Mountains |
| Geology | |
| Rock type(s) | granite, rhyolite |
The Organ Mountains (also known as La Sierra de los Órganos) are a rugged mountain range in southern New Mexico in the Southwestern United States. Organ Mountains–Desert Peaks National Monument was declared a national monument on May 21, 2014. They lie 10 mi (16 km) east of the city of Las Cruces, in Doña Ana County.