South of Rangely and the White River, Unit 21 is east of the famous Book Cliffs in Utah and has good public access and abundant elk and mule deer. Some elk tags are sold over the counter, while all deer tags are limited. Hunters take many mature bucks.

Hunters and biologists have reported a dip in quality in recent years, but hunters who hunt hard usually find trophy class deer. Occasionally, a high quality buck is taken from the White River area in the north. Be aware of private land in the south. Lots of elk hunters who have bought over-the-counter tags have success since there is great access to most public land. Some outfitters also have prime private leases and private access to isolated BLM land.

This unit runs from the Utah border to the Cathedral Bluffs and Calamity Ridge in the east and from the White River in the north to Rat Hole Ridge, Baxter Pass and Douglas Pass in the south. The south part is rocky and steep with some rugged canyons, long mesas with cliffs around the edges and drainages that mostly run from east to west. Most of the best hunting territory for elk and deer is between 7,500 and 8,800 feet above sea level. The north part is made up of BLM land with great road access. The north end is primarily winter range. Animal numbers increase after mid-October. Before October deer and elk are found at high elevations in the south. Big game finds water in creeks and pockets in low to middle elevations.

High-elevation land is timbered with pines, firs and aspens. There are also some meadows. Middle-elevation terrain is comprised of canyons that are primarily covered with sagebrush and scrub oak with pockets of aspens. Pinyon and juniper woodlands, sagebrush slopes and expanses of oakbrush grow in low terrain.

Maintained roads lead to BLM property at various elevations, most roads branching off Highway 139, which runs north and south through the middle of the unit. Some roads are unimproved and rough more ideal for ATVs or side-by-sides. Deeded land blocks road access to some public land.

Rangely has lodging, gas, groceries and other supplies. Camping is permitted on almost all federal land.