SURVEY OF THE COLORADO OF THE WEST. 
13 
Price River and the San Rafael. This district is covered with buttes 
and many strangely carved rocks, and is known as Castle Valley. 
Descending the river through Glen Canon several great lines of cliffs 
are seen, which have not yet received names, as they have not yet been 
fully traced, nor their geological relations fully studied. 
To the north of the Grand Canon and facing it we see first a low line 
of irregular, broken cliffs, everywhere capped by a conglomerate which 
is covered with trunks and fragments of silicified wood, known to the 
Indians as Shin-aP-ump, and we call these Shin-aP-ump Cliffs. Still to 
the north and approximately parallel with this line, but sometimes co- 
alescing with it, are the Vermillion Cliffs. These can be traced from the 
west side of Rio Virgen across the Kanab and around the northern 
extremity of the Kaibab Plateau, and across the Colorado, where they 
turn to the south and form the eastern wall of the valley of the Little Colo- 
rado for many miles. Above, and approximately parallel with these, we 
have the White Cliffs and many minor lines of cliffs due to erosion. The 
second class of cliffs are due to the displacement of the beds along the 
lines of faults; these have a northerly and southerly direction at right 
angles to the three great lines of cliffs last mentioned. We have the 
cliffs of the eastern Kaibab faults and the cliffs of the western Kaibab 
faults ; then the To-ro'-wip Cliffs on the west side of the Kanab Plateau. 
There is a long line of cliffs known as the Hurricane Ledge forming the 
western escarpment of the U-in-kaP-et Plateau and extending far north 
across the Rio Virgen. 
The Sevier Cliffs constitute the boundary of the Pauns-a-gunt Plateau, 
and are approximately parallel to the upper course of the Sevier River; 
these and many other subordinate lines of cliffs have been traced and 
mapped. 
MOUNTAINS. 
Many new mountains have been added to our geographic knowledge. 
To the north of the Escalante River there is a group of eruptive mount- 
ains, the three highest peaks of which attain an altitude of about 12,000 
feet above the level of the sea. We have called these Henry Mountains, 
in honor of the secretary of the Smithsonian Institution. Then we have 
the Kavaj'o Mountain a little to the south of the mouth of the San Juan 
River, the greatest single mountain mass known to me within all the 
territory of the United States; it is nearly 12,000 feet high. On the 
U-in-kaP-et Plateau there is a group of eruptive mountains which we 
have called U-in-kaP-et Mountains. 
On Kew Year’s day, 1854, Lieutenant Whipple, from an eminence on 
the western flank of San Francisco Mountain, descried the summit of a 
peak away to the north, and on the maps of the route of the expedition 
he indicated the position of the mountain and called it High Mountain. 
In the year 1858, Lieutenant Ives, from a position farther west, saw 
what he calls a short range, and on his map indicates the supposed 
