The Bullion Mountains are located in the Mojave Desert

Mojave Desert

The Mojave Desert occupies a significant portion of southeastern California and smaller parts of central California, southern Nevada, southwestern Utah and northwestern Arizona, in the United States...

 of California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 southeast of the city of Barstow

Barstow, California

Barstow is a city in San Bernardino County, California, United States. The population was 22,639 at the 2010 census, up from 21,119 at the 2000 census. Barstow is located north of San Bernardino....

. The mountain range stretches for approximately 50 miles in a northwest-southeasterly direction north of Joshua Tree

Joshua Tree, California

Joshua Tree is a census-designated place in San Bernardino County, California, United States. The population was 7,414 at the 2010 census, up from 4,207 at the 2000 census.-Geography:Joshua Tree is located in the Mojave Desert at ....

 and Twentynine Palms.

Since most of the range lies in the Marine Corps Air Ground Combat Center Twentynine Palms

Marine Corps Air Ground Combat Center Twentynine Palms

The Marine Corps Air Ground Combat Center , also known as 29 Palms, is a United States Marine Corps base. It was a census-designated place officially known as Twentynine Palms Base located adjacent to the city of Twentynine Palms in southern San Bernardino County, California. As of the 2000...

, where live ammunition practices occur, almost the entire mountain range is off-limits to the public. The highest point of the range in the northwestern region is 4,669 feet (1,423) meters.