A photo of The Columbia River
By Geology and Ecology of National Parks
June 2011 (approx.)
Detailed Description
View looking downstream along the Columbia River from Mayer State Park on the Oregon side. Massive ledges of the Grande Ronde Basalt Formation (Lower to Middle Miocene) of the greater Columbia River Basalt Group are visible on the north (Washington) side of the river.
Sources/Usage
A photo of The Columbia River