Strahler, A.N., 1940, Landslides of the Vermilion and Echo Cliffs, Northern Arizona: New York, Columbia University, M.S. thesis. Authors Strahler, A.N. Publication Date 1940 Citation New York, Columbia University, M.S. thesis. State AZ Province CP County CN Placenames Echo Cliffs Vermillion Cliffs Keywords Landslide Rock Avalanche Debris Flow More Keywords Landslide, Rock Avalanche, Debris Flow, AzGeoBib RefNum 9814