Charred wood caught between layers of lava, indicating that there was enough time elapsed between flows to allow vegetation to grow on or around the older flow.
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.
Photograph of the Palouse Canyon below the falls, in eastern Washington. Basalt cliffs line the canyon walls and the Palouse River winds its way down to join the Snake River.
Photograph looking down on the Palouse Falls in eastern Washington. The falls have a height of approximately 196 ft. Basalt cliffs line the canyon surrounding the falls.
Grand Coulee Dam (Wash.);Hydroelectric power plants -- Washington (State);Dams -- United States -- Design and construction;Cofferdams -- Design and construction.
The preparation of the southern end of the dam site has had most of the loose rock removed, and the coffer dam complete. The work of removing soil and loose rock on the north end of the dam was still under way.