Explore
The main walking route covers 1.25 miles of paved, step-free pathways. You will see towering columns, mirrored pools, and natural musical instruments.
The underground temperature stays a constant 54°F (12°C) every day of the year. The massive cavern features ceilings up to 10 stories high. Food and drink are banned inside, and visitors are strictly prohibited from touching any natural formations.
10 minutes3.5-acre expanse
This is considered the largest musical instrument on Earth, covering 3.5 acres. It creates symphonic tones by electronically tapping stalactites with rubber mallets. Visitors cannot play the console, but the automated mechanism plays during tours.
5 minutes18-20 inches deep
A shallow, crystal-clear spring perfectly mirrors the stalactites hanging above. This creates a flawless optical illusion of a deep, descending cavern. Look closely to spot the bottom, as the water is actually only 18 to 20 inches deep.
15 minutesWide-angle lens useful
This massive subterranean chamber holds towering columns and soaring ceilings. At its highest point, the ceiling reaches 10 stories high. Bring a camera with a wide-angle lens to capture the immense scale of these stone pillars.
5 minutesPure white calcite
This pristine white calcite formation resembles a cascading waterfall frozen in time. Notice the pure crystalline coloration here. It is unaffected by the iron and clay that tint the other rock formations.
