And all agreed that it was a spectacle well worth seeing. The water of Canyon River, in the shadow of the great walls, roared and thundered, as it dashed with mighty force over the brink, to madly froth and seethe and bubble and swirl away two hundred feet below.

All felt a tremor when they thought of the fate of the "Dauntless" and "Speedy" and the awful plunge which each boat must have taken.

It was a long time before the boys could tear themselves away from the fascinating spectacle. Naturally, they were anxious to return to the village. Now that their own dangers were past, they felt so terribly worried about Dick Travers and Tommy Clifton that any real enjoyment was out of the question.

Howard Fenton agreed to accompany them to Mountain Village on the following day.

That night, he again exchanged signals with Neil Prescott, the boys being deeply interested spectators of the proceeding.

The eventful morning arrived, and the four set out early, leaving Stuart Wells at the camp.

Fenton led the way toward a gully and began scrambling up the side.

"Jiminy crickets!" exclaimed Bob. "Work ahead, Chubby."

And Dave's only reply was a long drawn-out groan.

A bit further up, a patch of scrubby firs and bushes stood out sharply against their gray surroundings, and above that there was nothing but barren rock.