Original Photograph 



July 3. 1927. Shantz 

 P-12-1927. Facing 

 northeast. 



First Retake and 

 Description 



June 16, 1958. W.S.P.. 

 C-5-1958. 



This picture and others 

 from the same region 

 illustrates minimal erosion 

 effects. The cliffs were little 

 changed and even the 

 same ridges can be seen in 

 both photographs. Prob- 

 ably the erosion is ex- 

 tremely slow and apt to be 

 catastrophic. The sod of 

 short grass plants holds 

 the surface firmly in place. 

 Notice along the top of 

 erosion bank, colonies of 

 Opuntia spp., an indication 

 that this plant comes into 

 unoccupied grass areas 

 (from Phillips 1963, p. 93). 



Second Retake 



August 2, 1998. 

 Kay-4356-14A. 









46 



