The North Mesquite Mountains Wilderness consists of the broad western end of Sandy Valley and the northern portion of Mesquite Mountains. Rolling brown foothills, a few steeper mountains, and medium sized buttes comprise the reddish-brown geologic features in the wilderness. Vegetation of this area is characteristic of the mid-elevations of the eastern Mojave Desert. Dominant vegetation includes creosote brush scrub, blackbush, Joshua tree woodland, yucca, cacti, and some grasses. Wildlife is also typical for the Mojave Desert; including coyote, black-tailed jackrabbits, ground squirrels, kangaroo rats, quail, roadrunners, rattlesnakes and several species of lizards. Due to the lack of natural waters, bighorn sheep do not inhabit the area on a permanent basis but do transverse the area. The southern tip of the wilderness provides critical habitat for the desert tortoise.