A vast area of basalt lava flows in Eastern Washington, roughly bounded on the west by the Columbia River, on the east by the Idaho border, on the north by the Columbia River and Spokane River, and on the south by the Oregon border. This region encompasses Grand Coulee, Potholes Basin, and Moses Coulee.
Blue Lake Rhino Cave via Jasper Inlet—East Face (Lower Grand Coulee, WA)
Trip Date: April 16, 2024 2024 COLUMBIA PLATEAU ADVENTURE VACATION Blue Lake Rhino Cave Exploration Blue Lake
...
