Together, these muscles support the spine and help keep it aligned, working to alleviate sciatica pain. 1  Extensions. Lie on your stomach, with your arms and legs stretched out. 2  Curl-ups. Lie on your back with the knees bent. 3  Leg Raises. Lie on your back with your hands behind the head.
Natural History. Grand Coulee Dam is positioned in an area which sits on the edge of two geologic zones â the Okanogan Highlands and the Columbia Plateau. The dam sits on the solid granitic rock of the Okanogan Highlands, making a perfect base for the dam. The Columbia Plateau to the South consists of layers of softer basalts. The Columbia River in the Grand Coulee region was carved between these two geologic zones.
Hidden Valley Park. This park offers excellent access to the Grand River below a spectacular exposed Chagrin Shale cliff. Views of the scenic river are visible from a flat riverside trail. Trees along the river and trail display evidence of busy beavers. A pond and loop trail are also available at the north entrance of the park.