Grand Coulee

The Grand Coulee is an ancient river bed formed about 18,000 years ago, toward the end of the last Ice Age, by multiple and gigantic glacial melt flows in central Washington state. The resulting canyon is about 60 miles long, roughly four miles wide, and up to 1,300 feet deep. These photos of the Coulee were taken in 2004. The road photo below was taken through the windshield of a bus on a section of Rt 155 that run inside the coulee.

The Columbia River runs through the Coulee. The Grand Coulee Dam was completed on it in 1942.