Crystals

Admiring shades of lava which imperceptively
Passed from reddish brown to bright yellow, their way
Lit by crystals appearing as lighted globes, they
Continued through the lava gallery which gently
Sloped until they reached the intersection of two roads
Without hesitation, Professor Lidenbrock
Chose the eastern tunnel, and the journey continued
Through a succession of arches appearing before
Them as if they were the aisles of a gothic cathedral