Yellowstone Canyon (Pleistocene) below Tower Creek, looking north-northwest from point near Tower Falls. Yellowstone National Park, Wyoming. 1926.

Album caption and index card: Yellowstone Canyon (Pleistocene) below Tower Creek, looking north-northwest from point near Tower Falls. Auto road is below upper cliff of basalt at left. Below road are wooded, fallen masses of basalt. Cliff at right exposes glacial drift, upper columnar basalt, Tower Creek conglomerate (Pliocene ?), lower columnar basalt wedging out at right, and early basic volcanic breccia (Miocene). Yellowstone National Park, Wyoming. September 14, 1926.