Unit 104 sits in southern Las Animas County—the eastern slope of the Sangre de Cristos and the foothill country between Trinidad and the New Mexico line. Elevations climb from about 5,500 feet on the eastern plains floor to 9,000 feet on the higher ridges of the Culebra Range and the Vermejo high country. Vegetation steps from PJ-and-juniper on the lower benches, into Gambel oak, mountain mahogany, and serviceberry on the mid-slopes, and ponderosa-fir-aspen on the higher north-facing aspects. Mule deer are the headline species and grow big in this country—the genetics and undisturbed habitat are real—while elk numbers have climbed steadily, with the Vermejo herd spilling onto huntable ground in some seasons. Black bear and turkey both round out the bag. The challenge is access: enormous private ranches dominate the prime country—Vermejo Park Ranch (in NM but with adjoining CO ground), Tercio, and other large legacy holdings have most of the best high country locked up. San Isabel National Forest holdings in the unit are limited; BLM is patchier still. The result is that public DIY hunters work small slivers of NF, state trust, and the rare Walk-In or leased access. CO-12 (the Highway of Legends) runs west out of Trinidad through Cokedale, Stonewall, and over Cuchara Pass; US-160 cuts west toward La Veta. Trinidad has full services—gas, motels, processors, hospital. Cell service is reliable on the highway corridors and disappears past the last gas pump. The country is dramatic—old coal-mining towns, abandoned mine works, Spanish land grant boundaries, and dirt roads that turn to red gumbo when the snow melts.