This is the Wallula Gap area! Where the great Missoula floods channeled through basalt. Whoosh! What a sound that must have been?
The Walla Walla is a place where flood water flooded quietly, laying down layers and layers of sediment showing the many floods over time
wa100.dnr.wa.gov/columbia-bas...
The Washington Geological Survey presents 100 of the quintessential places to experience Washington’s geology up close, leaving few stones unturned at https://wa100.dnr.wa.gov #wa100
