On the opposite side of Ten-ie-ya Cañon is the Half Dome (Tis-sa-ack) the loftiest peak of the granite cliffs that form a part of the walls of the Yosemite Valley. Its height above the valley is 4,737 feet. On the side next to Ten-ie-ya Cañon this cliff is perpendicular for more than 1,500 feet from its summit, and then, the solid granite slopes at about an angle of 60 degrees to its base. The top of this mass of rock has the appearance of having been at one time a dome-shaped peak, now however, but half remains, that portion split off has by some agency, been carried away. At its Northerly base is Mirror Lake, and farther up the Cañon is Mt. Watkins, Cloud’s Rest, a cascade, and Lake Ten-ie-ya. This brief outline of description includes the principal points of interest on the north side of the valley. From the lower part of the valley, the first prominent object reached on the south side, is the Bridal Veil Fall. The water of the “Po-ho-no” here falls over a cliff from a perpendicular height of 630 feet, onto a sloping pile of _debris_, about 300 feet above the level of the Merced, in reaching which it rushes down the slope among the rocks in cascades and branching outlets. The total height of the cliff over which the water falls is about 900 feet. The trees on the slope below conceal the lower part of the fall, so that at a distance it appears as if reaching to the bottom of the valley. Just above the Bridal Veil are what have been termed the “Three Graces,” and not far above these, are the peculiar appearing pinnacles of rocks to which the names of Cathedral Rock and Cathedral Spires have been given. Cathedral Rock is 2,660 feet high. The spires just beyond are about the same height from the level of the valley. They are pointed columns of granite 500 feet high, attached at their base with the cliff forming the side of the valley. The next prominent object on the south side is Sentinel Rock, 3,043 feet high. This pinnacle of granite is on the extremity of a point of rocks extending into the valley. For a thousand feet or more, it has the form of an obelisk, below which it forms a part of the projecting rocks. The next object is the massive point projecting into the valley, and which here forms an angle towards the south; it is called Glacier Point. This has an elevation of 3,200 feet above the valley. From this point some of the finest views of the vicinity can be seen. Behind Glacier Point and Sentinel Rock, appearing as if these cliffs formed a part of its base, is the South Dome, known also as the Sentinel Dome. The name of “South Dome” was originally given to this dome-shaped mass of granite by our battalion. It is 4,150 feet above the valley. The South or Glacier Cañon is just above Glacier Point. At the head of this rocky impassable cañon, is the beautiful fall I have named “Glacier Fall.” This fall is about 600 feet high. The middle cañon, Yanopah, opens from the east. The Merced river comes down this cañon into the valley.