STS068-209-077 Snake River, Blue Mountains, Oregon October 1994 The canyons of the Snake River, cutting its way across the Columbia Plateau and the forested (darker red color) Blue Mountains can be seen in this south-looking color infrared view. The Snake River traverses the image from near the left center at Lewiston, Idaho to near the right center of the image just before joining the Columbia River near Kennewick, Washington. Agricultural field patterns cover both sides of the Snake River in this wheat-growing region of southeastern Washington. The Blue Mountains, which are generally rounded and rugged, average 6500 feet (2000 meters) in elevation. Besides the growing of grains, stock grazing, lumbering, and mining are carried on in the vicinity of the Blue Mountains.