ΓÇ£And now we wheel into another canyon, on swift water, unobstructed by rocks. This new canyon is very narrow and very straight, with walls vertical below and terraced above. ... Floating down this narrow channel, and looking out through the canyon crevice away in the distance, the river is seen to turn again to the left, and beyond this point, away many miles, a great mountain is seen. ... We name this Narrow Canyon, and it terminates at the bend of the river below.ΓÇ¥