The pictured geomorphic landform is one of several Pleistocene paired terraces above the Agua Fria River located just north and west of Phoenix. With a large watershed to the north, the Agua Fria has brought a variety of rock types to the area, forming the river terraces. Sediments on this terrace consist of brown . . . → Read More: Postcard: Geomorphological Overlook above the Agua Fria River