Switzerland, which is only about half a mile broad. The Tenaya mer de
glace was not less than two miles broad, late in the glacier epoch,
when all the principal dividing crests were bare; and its depth was
not less than fifteen hundred feet. Ice streams from Mounts Lyell and
Dana, and all the mountains between, and from the nearer Cathedral
Peak, flowed hither, welded into one, and worked together. After
eroding this Tanaya Lake basin, and all the splendidly sculptured
rocks and mountains that surround and adorn it, and the great Tenaya
Canyon, with its wealth of all that makes mountains sublime, they were
welded with the vast South, Lyell, and Illilouette glaciers on one
side, and with those of Hoffman on the other--thus forming a portion
of a yet grander mer de glace in Yosemite Valley.

I reached the Tenaya Canyon, on my way home, by coming in from the
northeast, rambling down over the shoulders of Mount Watkins, touching
bottom a mile above Mirror Lake. From thence home was but a saunter
in the moonlight.

After resting one day, and the weather continuing calm, I ran up over
the left shoulder of South Dome and down in front of its grand split
face to make some measurements, completed my work, climbed to the
right shoulder, struck off along the ridge for Cloud's Rest, and
reached the topmost heave of her sunny wave in ample time to see the
sunset.

Cloud's Rest is a thousand feet higher than Tissiack. It is a
wavelike crest upon a ridge, which begins at Yosemite with Tissiack,
and runs continuously eastward to the thicket of peaks and crests
around Lake Tenaya. This lofty granite wall is bent this way and that
by the restless and weariless action of glaciers just as if it had