Unit 40 is the chunk of far-east New Mexico tucked under I-40, running from Santa Rosa east to the Texas line and dropping south past Tucumcari toward Fort Sumner and Clovis. Quay, Curry, Guadalupe, De Baca, and Roosevelt counties all touch it, and the whole place is high-plains country—roughly 3,800 to 5,600 feet of mesa tops, grass prairie, juniper-studded breaks, and the long band of caprock that splits the rougher arroyos up north from the farmed plains to the south. This is antelope ground first and foremost; the speed goats are way more common than the deer, and what muley bucks live here are thin and mostly young. If your picturing dark timber and elk, wrong unit—this is glass-the-flats, drive-the-section-roads, follow-the-fencelines hunting where you sit on a rise off a county road and pick antelope out of the shimmer a mile off. The catch is land, and it's a big one. Only about a tenth of this unit is public, scattered as state trust and BLM tracts, and a lot of those squares are landlocked behind private with no legal way in—you'll cross private to reach state ground more often than not, so an onX-style layer and a hard look at access is the whole game before you ever load the truck. Since New Mexico killed the old A-PLUS private-ranch assignment, drawing an antelope tag here just gets you the legally-accessible public during a short hunt, not a ranch, which makes the access homework matter even more. I-40 runs the north edge with Santa Rosa for fuel and a bed, Tucumcari has the old Route 66 motels, and Clovis and Fort Sumner round out the south. Cell coverage holds near the interstate and the towns but dies quick once your down the dirt, and that caliche turns to grease the second it rains. No reservation ground in play here—the headache is purely private lockup, not tribal closure.