616 ALLEN DAVID HOLE 
Roger Gulch at 11,200 feet elevation, and in Ground Hog Gulch 
at 10,900 feet. Glacial drift including bowlders in variety, some 
of them striated, occur at numerous points, among which may be 
named: (1) Roger Gulch at 10,200, 10,600, and 10,800 feet; 
(2) Ground Hog Gulch at 10,500 and 11,100 feet; (3) south 
branch of Ground Hog Gulch at 10,800 and 11,500 feet; (4) Leslie 
Gulch at 11,000 feet; and (5) Poverty Gulch at 10,300 feet. Stri- 
ations on bed rock occur on the south side of the stream draining 
Poverty Gulch at elevation 10,300 feet, bearing S. 73° W. Itis there- 
fore clear that glacial ice covered the whole eastern (westward-facing) 
slope; the irregularity of the topography is, however, in part due 
to landsliding, as noted by Cross.t* | The landslide here occurred 
partly before and partly after the more recent epoch of glaciation. 
Fig. 7 shows a landslide block which came to its present position 
before the more recent glacial epoch, as shown by the well-cleaned- 
out, round-bottomed valley head lying to the northeast of it, the 
steep walls above the talus, and glacial débris a little farther down 
the valley. It is in general true that the upper ends of the gulches 
on the slope here described are cirquelike, have well-cleaned-out, 
comparatively flat bottoms with occasional ponds, and are bounded 
by rough, nearly perpendicular walls rising above steep slopes of 
talus. Rock streams occur on the south side of Poverty Gulch at 
an elevation of 11,000 to 11,500 feet, and again a half a mile farther 
south on the other side of the ridge at an elevation of 11,500 to 
12,000 feet. The broad cirque lying farthest east on the north side 
of Sheep Mountain has almost its whole surface below the pre- 
cipitous bounding walls down to 11,500 feet elevation covered with 
bare talus slopes; below this a part of the surface supports a forest 
growth, which in turn gives way to a nearly perpendicular rock face 
southwest of the artificial lake at 10,000 feet elevation. 
The slope south of Trout Lake, like that to the east of the lake, 
is mostly forest-covered but is less irregular in topography. Due 
south of Trout Lake, at 10,500 and 10,600 feet elevation, drift with 
striated bowlders occurs, and hummocky topography including 
occasional kettles continues to 11,000 feet. Striated bowlders also 
occur at 10,400 feet elevation southeast of Lizard Head Station. 
t Telluride Folio, pp. 10, 11. 
