262 
The Colorado River 
tively slow and we were not disturbed over it. Powell hesitated 
as to calling this place Rainbow or Island Park, the choice event¬ 
ually falling to the latter. The valley is only three or four 
miles long in a straight line. Shortly before sunset we had 
the disappointment of reaching the end of it, and immediately 
below the place where we camped the rocks closed sharply 
together once more. Here Powell determined that he would 
push ahead of the main party, in order to make his way, as 
In Split-Mountain Canyon. 
Highest walls 2700 feet. 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
soon as possible, to the Uinta Ute Agency, in order to com¬ 
municate with the outer world and ascertain if his plans for 
supply-trains were moving on to success. He took the Dean, 
but Bishop was put in my place because of his considerable 
experience in the Western country, for there was no telling 
what they might encounter. On the morning of July 7th, at 
daybreak, therefore, they were off, and speedily disappeared 
from our sight within the rocks that arose below our camp. A 
