Unmistakably a furious cascade was boiling, swirling away, down there at undetermined distances of blackness.

The scenery of all the passes, especially at the head, is of the wildest and grandest description,lofty peaks massed together and laden around their bases with ice and snow; chains of glacier lakes; cascading streams in endless variety, with glorious views, westward over a sea of rocks and woods, and eastward over strange ashy plains, volcanoes, and the dry, dead-looking ranges of the Great Basin.