One of the most popular attractions here, this two-person tube ride (solo travelers share a lift with a stranger) starts in the bright light of day and suddenly plunges into a curvaceous 500-foot-long pitch-black tube illuminated only by a guiding, glowing line. The lack of light makes the spinning, twisting, 1,000-gallon-a-minute torrent more fun, and you'll likely be screaming your head off as you zip into curves and up the enclosed watery-banked turns. Minimum height: 36", 48" without an adult.
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