Find Your Park logo
Read about the Newest National Natural Landmark
NNL 50th Anniversary

For the more information about the air resources of the National Park Service, please visit

Wallula Gap

Wallula Gap
Wallula Gap

Wallula Gap is the largest, most spectacular, and most significant of the several large water gaps through basalt anticlines in the Columbia River basin.

Location: Benton County, WA ; Walla Walla County, WA

Year designated: 1980

Acres: 4,430

Ownership: Federal, State, County, Municipal

← Back to NNL listing for WA.

← Back to listing of all states and territories.

Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.

Last Updated: June 28, 2012