By fortresses that Titans might defend,
And amphitheatres where Gods might strive.
Cathedrals, buttressed with unnumbered tiers
Of ruddy rock, lift to the sapphire sky
A single spire of marble pure as snow;
And huge aerial palaces arise
Like mountains built of unconsuming flame.
Along the weathered walls, or standing deep
In riven valleys where no foot may tread,
Are lonely pillars, and tall monuments
Of perished aeons and forgotten things.
My sight is baffled by the wide array
Of countless forms: my vision reels and swims
Above them, like a bird in whirling winds.
Yet no confusion fills the awful chasm;
But spacious order and a sense of peace
Brood over all. For every shape that looms
Majestic in the throng, is set apart
From all the others by its far-flung shade,
Blue, blue, as if a mountain-lake were there.

How still it is! Dear God, I hardly dare
To breathe, for fear the fathomless abyss
Will draw me down into eternal sleep.

What force has formed this masterpiece of awe?
What hands have wrought these wonders in the waste?
O river, gleaming in the narrow rift
Of gloom that cleaves the valley's nether deep,--
Fierce Colorado, prisoned by thy toil,