This is a fairly large unit with not a lot of access. The Yakima River, which is lined with multiple towns and irrigated fields, serves as the southwest border. The middle of the unit offers the best access and is largely checkerboarded between private, BLM, and state sections, along with a sizeable Hunt by Written Permission chunk. Rattlesnake Ridge runs through this region and is the high ground, with Rattlesnake Mountain rising 2,000-ft above the valley floor and peaking out at around 3,400-ft. The northern border is the Yakima Training Center, as well as the Columbia River which winds its way around the US Department of Energy Hanford Site and the Saddle Mountain National Wildlife Refuge in the eastern portion of the unit.

Private land access is extremely tough to find and expensive to gain access to.