Zone 51 covers the central Snake River Plain country south of the Magic Valley, including the lava-flow country of Craters of the Moon's western fringe and the high desert toward the Idaho-Nevada line. Elevations span from about 4,000 feet on the plain to over 7,000 feet on the higher benches. The country is sage-bunchgrass desert with extensive lava flows, juniper pockets in the draws, and scattered mahogany on the rims. Water is genuinely scarce, concentrated at stock tanks, springs, and the rare creek. BLM dominates the public land with state endowment and significant private ranchland filling in. Highway 93 and various county and BLM roads provide access. The road network is graded gravel and dirt; the lava rock is murder on tires. Twin Falls is the supply hub; Burley is closer for the eastern portion. Cell service is in towns and weakens fast off-highway. Mule deer and pronghorn are the species—deer use the canyon rims and lava breaks; antelope live on the open sage. The country is wide-open glassing, but the lava field travel is genuinely hard on legs and tires. Carry water, carry a spare, and watch for rattlesnakes in the warmer days of early season.