Unit 59 stretches across the southeast slice of this northeast-corner country, spanning Union, Harding, and a touch of Colfax, running roughly from Roy and Mosquero on the west toward Clayton on the east. This is lower, drier plains than the mesa units up north—elevations sit down around 4,400 to 6,200 feet—and the defining feature is the way the flat prairie suddenly cracks open into canyons cut 300 to 1,000 feet below the surrounding tableland. Up top its crop fields, short prairie grass, yucca and cholla; drop into the canyons and the breaks and you're into pinyon and juniper. That canyon edge is where you hunt—glassing the rims, working the heads of draws, looking for deer and antelope using the cover where the country falls away. The Canadian River system has carved a lot of this, and there's some genuinely rugged ground hidden in what looks like pancake-flat prairie from the highway. Elk show up in limited numbers but this is mainly a mule deer, whitetail, and pronghorn unit. Like every unit out here, access is the thing that'll make or break your trip. It's about three-quarters private deeded ranch ground, with the public piece—roughly a quarter—made up of scattered Kiowa National Grassland tracts on the eastern and western edges plus state and BLM sections, and a chunk of those state pieces are landlocked behind private with no legal way in. US 56 runs along the northern boundary as your main paved reference, and NM 39, 120, 402, and 562 are the routes that get you into the country; past the pavement its ranch roads and primitive two-tracks. Roy and Mosquero are tiny—don't count on much beyond maybe gas—so Clayton or Springer is where you stock up before you commit. The country is empty enough that you can drive a long way without passing a hospital, a motel, or a grocery, so treat it like the backcountry it functionally is. Cell dies fast off the highways. The dirt does the usual northeastern-New-Mexico trick of turning to grease after rain, and the wind never quits. It's lonely, lightly pressured country with surprising terrain folded into the flats—but you'd better have your public access or a ranch permission figured out cold before you turn off the blacktop.