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Category Archives: “The Columbia Basin” Vol. 10

“The Columbia Basin” Chap. 2 – The Walla Walla Valley

Clarkston, WA to Walla Walla, WA (US 12) US 12 emerges from the foothills of the Blue Mountains and heads west, entering the valley of the Walla Walla River. The Walla Walla rises in the mountains of southeast Washington/northeast Oregon and flows west to join the Columbia River. Due to its position at the western […]