A few steps farther and Mukoki exchanged places with Wabigoon.
"Muky has been here before," cried Wabi close up to Rod's ear.

His voice was almost drowned by the tumult below.

"That's where the river rushes through the mountain!" Rod forgot his fatigue in the new excitement.

Never in his wildest dreams of adventure had he foreseen an hour like this.

Each step seemed to bring them nearer the edge of the vast chasm through which the river plunged, and yet not a sign of it could he see.