As an illustration of the rugged work which such expeditions were called upon to undergo, Dr.Peters says that when they struggled to the other shore, they found themselves confronted by a mass of solid and almost perpendicular rocks, fully six hundred feet high.

This was ascended, after the most exhausting labor, by means of a zigzag trail, and the journey was pushed over a rough and diversified country.

Grass and water could not be found until they reached a small Mexican town where they were enabled to buy what was so sadly needed.

Men and animals were so worn out that they rested for an entire day.
The next morning the line of march was taken up, and they had not gone far when Carson discovered a trail.

This was followed with renewed vigor and a couple of days later the Indians were overtaken.