U. S. GEOLOGICAL SURV 
SY BULLETIN 707 
PLATE XLVITI 
‘hi peed remnant of n 
ad of the tracks and i 
which show in the pic ture: 
: kant 60 ) feet hig 1. The monte is cut by 
Photograph by Marius R. ipbell 
NATURAL GRANITE MONUMENT. 
granite at “anyon stands to the 
the upper end of Wildhorse 
zt dikewor other material, 
B. POTHOLES IN GRANITE BOULDERS. 
In Br hd © 
anyon there are mat a 
and bo ils but whic h i in 
boulders « soln in eye of the larger blocks, cutting great circular pits calle . 
Photograph by Marius R. 
rgze granite boulders around which in ordinary the w 
sods ce cenplebeds submerged. The rushing current trolls round 
Campbell. 
