Southern WA Cascades

A mountainous region in southern Washington, roughly bounded on the north by Cedar River, Stampede Pass, upper Yakima River, and Ryegrass Coulee (I-90); and on the south by Columbia River. This region encompasses Mt. Rainier National Park, William O. Douglas Wilderness, Goat Rocks Wilderness, Mt. St. Helens National Volcanic Monument, Indian Heaven Wilderness, and Mt. Adams Wilderness.