Desolation is a fine chasm, whose walls are 2400 feet.

The view on page 206 gives an excellent idea of their average character.

The mouth of the Uinta River, not far above its head, is 4670 feet above the sea, while Gunnison Valley is 4083, showing a descent for the river, in Desolation and Gray, together of 587 feet.
Desolation is full of rapids, some of them bad.

Wonsits Valley, which succeeds Desolation, is the longest of the few valleys, being about 87 miles, with a width of 6 or 8 miles.

There is a considerable amount of arable land, and along the river bank large groves of cottonwood trees.
The river course is winding, the current sluggish, the width being 600 to 800 feet.