Hexie Mountains. I love the different colors of those mountains. The Hexie Mountains consist of a mass of Pinto gneiss which extends east from the Little San Bernardino Mountains and whose topographic expression may be partly the result of movement along the Eagle Mountain fault at the southern edge of the range.

The range is located in the higher northern Mojave Desert area of the park. Numerous washes drain the Hexie Mountains, including Porcupine Wash and Fried Liver Wash. These host a mixture of low and high desert animals and plants. A herd of desert bighorn sheep also live there. There were attempts to mine and mill gold at many sites, including Ruby Lee Mill, and none were successful. Native petroglyphs can also be found.