The Columbia Plateau is an important geologic and geographic region that lies across parts of the U.S. states of Washington, Oregon, and Idaho. It is a wide flood basalt plateau between the Cascade Range and the Rocky Mountains, cut through by the Columbia River.
AdThere Isn't A Single Amazing Thing About Oregon. There Are About Ten Zillion. Experience Oregon Wineries, Along With More Incredible Food & Drinks Oregon Has To Offer.
Site visitors: Over 10K in the past month
Portland, Oregon · The Oregon Coast · Places To Stay · Plan Your Oregon Trip
Save
Share
More