2013 Map of Poisel Butte SW

About this map

Onepennee Cem rests on a high plateau in this corner of the Yakama Indian Reservation, a landscape defined by the steep southern descent into the Horse Heaven Hills. The map details a rugged transition where the high country drops away toward the Klickitat Co line, marked by intermittent water sources like Rock Spring and Pine Spring. These critical water points are scattered among the drainages of Mule-Dry Cr and Pine Cr, which carve deep contours into the terrain. A network of Bureau of Indian Affairs roads, including Bia 240 RD and Bia 63 RD, provide the primary access through this isolated section of Washington. The geography is characterized by distinctive landforms such as The Island, illustrating the complex erosional patterns of the eastern Cascades' rain shadow.