Unit 181 covers the upper Huerfano River basin and the southern Sangre de Cristos—Huerfano County country with the Sangre crest defining the western boundary and elevations climbing from about 7,500 feet in the Huerfano valley to over 14,000 feet on Blanca Peak (14,345) and Mount Lindsey on the southern Sangre crest. The terrain is layered classic high-country: sagebrush and grass parks in the valley, transitioning through ponderosa pine and aspen on the lower mountain slopes, Douglas fir and lodgepole pine in the mid-elevations, and dense subalpine spruce-fir with alpine meadows above 11,500 feet. The Blanca Massif itself is one of the most dramatic peak groups in Colorado—Blanca, Lindsey, Ellingwood, and Little Bear all over 14,000 feet, with a sacred status to the Pueblo and Navajo peoples. The Huerfano Valley below is high mountain ranch country with substantial elk and mule deer populations. San Isabel National Forest covers the high country with the Sangre de Cristo Wilderness occupying the crest core (motorized prohibited—boots and horses only). Significant private deeded ranchland covers the valley floor, including the Trinchera Ranch (one of Colorado's largest private holdings, with limited paid hunting access). CO-69 runs north-south through the Wet Mountain Valley to the east; access into 181 is mostly via county roads and FS roads off CO-69. Westcliffe and Walsenburg are the supply towns. Cell service is fair in the valley and gone in the wilderness. The country produces quality elk and big mule deer for hunters who pack into the wilderness or work limited NF road access; the private ranches on the valley floor concentrate winter range that hunters cant' access without leases.