1922] 



EDWARDS, GEOLOGICAL WORK AT GRAND CANYON 



91 



underbrush in the woods, and everywhere the tall straight trunks of 

 the pine trees are widely spaced, giving long vistas through the wooded 

 area. The timber in this forest is controlled by the United States For- 

 est Service, and is cut only when matured. In this way a constant 

 supply of new timber is growing up to take the place of that which is 

 used. We also passed near the foot of Sunset Peak, shown in figure 



Fig. 53. — Sunset Peak, Coconino Count)^ Arizona, 

 typical cinder cone. 



A 



53. This is one of the most prominent cinder cones of this volcanic 

 field and consists of a pile of brightly colored ashes and cinders which 

 cause it to appear as if brightened by the setting sun. This peak is 

 fully nine hundred feet in height and a very well-defined crater at the 

 top can be seen from the road at the foot of the mountain 



Farther on, the road left the edge of the forest, and likewise the vol- 

 canic region, and entered upon the Painted Desert. This at first sight 



