View of headscarp of Red Bluffs landslide (adjacent to the Bonneville landslide), looking northwest and showing the bedded volcaniclastic sediments (gray layers) that are dipping about 7 degrees toward the viewer and in which sliding has occurred. The slightly darker gray and orange-brown unit in the top quarter of the scarp face is Columbia River Basalt. The slowly creeping Crescent Lake landslide, on which the photographer is standing, is a reactivated part of the Red Bluffs landslide. USGS photo by T. Pierson.