Illustrations 
XXXI 
PAGE 
Gunnison Butte . . . . . . . .271 
Head of Gunnison Valley and foot of Gray Canyon. Powell Expedition 
of 1871 repairing boats. 
Photograph by E. O. B'eaman, U. S. Colo. Riv. Exp. 
Labyrinth Canyon, Trinalcove ..... 273 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
Bonito Bend, between Labyrinth and Stillwater Can¬ 
yons .......... 274 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
The Butte of the Cross between Labyrinth and Still¬ 
water Canyons ........ 275 
Photograph by E. O. Beaman, U. S. Colo, Riv. Exp. 
Head of Cataract Canyon, Looking down from Top of 
Walls near the Junction of the Grand and Green 278 
Depth, 1300 feet. 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
Side Canyon of Cataract Canyon ..... 280 
1500 feet deep ; 25 feet wide at bottom, 300 feet at top. 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
Side Canyon of Cataract Canyon.283 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
Cataract Canyon, Right-hand Wall toward Lower 
End .......... 285 
Height about 2700 feet. 
Photograph by E. O. Beaman, U. S, Colo. Riv. Exp. 
The Town of Bluff ........ 288 
Upper valley of the San Juan River. 
Photograph by Chas. Goodman. 
Glen Canyon Wall ........ 289 
About 1200 feet high. Homogeneous sandstone on top of thin bedded 
sandstone. 
Photograph by J. Fennemore, U. S. Colo. Riv, Exp. 
Glen Canyon.290 
Sandstone wall about 1200 feet high. 
Photograph by J. Fennemore, U. S. Colo. Riv. Exp. 
