The Colorado that, out of the Rocky Mountains,
For fifteen hundred miles of glory and thunder,
Rolls to the broad Pacific.
From Flaming Gorge,
Through the Grand Canyon with its monstrous chain
Of subject canyons, the green river flows,
Linking them all together in one vast gulch,
But christening it, at each earth-cleaving turn,
With names like pictures, for six hundred miles:
Black Canyon, where it rushes in opal foam;