Marine Corps Air Ground Combat Center Twentynine Palms is a military located in San Bernardino County, California. It appears on the Deadman Lake NE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 2,703.41 feet (824.00 m) above sea level. The nearest populated place is Stedman, approximately 14.3 miles to the NNW.