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Photo: WiiUser23 at English Wikipedia, CC BY-SA 3.0 via Wikimedia Commons
At the foot of Dry Falls. Offers camping and lakefront shoreline. During the last ice age, Dry Falls occasionally carried more water by volume than all the rivers of the world combined (known as the Missoula Flood).
Sun Lakes-Dry Falls State Park is a public recreation area located at the foot of Dry Falls, three miles (4.8 km) west of Coulee City in Grant County, Washington. The state park covers 3,774 acres (1,527 ha) along Route 17 at the head of the Lower Grand Coulee.
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These caves on the Grand Coulee were formed by water erosion on volcanic rock, which makes them geologically interesting.
A 27 mi reservoir in the northern portion of the Grand Coulee, a formerly dry coulee near the Columbia River, formed by the Missoula Floods.