In the heart of the Grand Coulee lies one of the natural wonders of North America—the Dry Falls cataract. This 3.5-mile-wide chasm of basalt, with a drop of 400 feet, was left high and dry thousands of years ago as the last of several Ice Age floods swept through the Grand Coulee. This is one of the most extraordinary landscapes to be found along the Ice Age Floods National Geologic Trail.
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Dry Falls Interpretive Center
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