The Plateaus 
53 
precipitous cliffs, stretch for many miles across the arid land 
like mountain ranges split asunder. This region, lying between 
the High Plateaus, the Grand Wash, the Henry Mountains, 
and the Colorado, is perhaps the most fascinating of all the 
basin. The relief map at page 41 gives the larger part of it. 
Balanced Rock. 
On Trail from House Rock Valley to Lee’s Ferry. 
Photograph by E. O. Beaman. 
In the basin there are also great mountain masses, the 
fountainheads of the waters which have carved the canyons. 
These are Uinta, Zuni, San Francisco, Henry, Pine Valley, 
Uinkaret, Beaver Dam, Virgen, Navajo, La Sal, and others, 
some reaching an altitude of more than twelve thousand feet. 
The highest peaks of these, and of course those of the Continen¬ 
tal Divide on the east, which furnish a large proportion of the 
