Ruins in Cañon de Chelle, N.M., in a cavity in the wall, 60 feet above present bed of Cañon.

Original negative number: 86.
Caption number on back of stereo: No. 21.
Part of series: U.S. War Dept., Corps of Engineers; Geographical Explorations and Surveys West of 100th Meridian, Expedition of 1871; Lieut. Geo. M. Wheeler, commanding.
Exhibited: "Framing the West : The Survey Photographs of Timothy H. O'Sullivan" at the Smithsonian American Art Museum, Washington, D.C., February-May 2010.