“The walls are resonant with majestic sounds, for the roaring waters of the river are echoed from cliff to cliff.”— John Wesley Powell
“The rains of the last few days have raised the river, and the rapids are more fearful than ever.”— John Wesley Powell
“We are three quarters of a mile in the depths of the earth, and the great river shrinks into insignificance as it dashes its angry waves against the walls and cliffs that rise to the world above.”— John Wesley Powell