Wallula Gap
Wallula Gap (/wəˈluːlʌ ɡæp/) is a large water gap of the Columbia River in the northwest United States in southeast Washington. It cuts through the Horse Heaven Hills basalt anticlines in the Columbia River Basin, just south of the confluence of the Walla Walla and Columbia rivers.
| Wallula Gap | |
|---|---|
View from northeast in 2008, from Main Street in Wallula | |
Location in the United States Location in Washington | |
| Location | Columbia River Basin, Washington, U.S. |
| Nearest city | Kennewick |
| Coordinates | 46°02′40″N 118°56′48″W |
| Designated | 1980 |
It has been recognized as a National Natural Landmark by the National Park Service as a site that provides an important illustration of the geological history of the United States.
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