Photograph of what looks like a school field trip exploring plant fossil beds at the head of Grand Coulee. Automobiles and clothing date the photograph as circa 1920-1930's.
Geology -- Washington (State); Waterfalls; Volcanic rock; Canyons
Photo of Dry Falls, a dry cliff that stands 400 ft. high and 3.5 miles wide. Dry Falls is a feature of Grand Coulee Canyon, which is part of the channeled scablands of eastern Washington.