formed that it was difficult to believe they had not been
built by the hand of man. They often appeared opportunely
to our trappers, and saved them the trouble and
danger of fording rivers. Frequently the whole band
would stop in silent wonder and awe as they listened to
the rushing of waters under their feet, as if another
world of streams, and rapids, and cataracts were flowing
below the crust of earth on which they stood. Some
considerable streams were likewise observed to gush
from the faces of precipices, some twenty or thirty feet