1: Discover the wonders of Son Doong Cave in Vietnam, the largest cave in the world.
2: Explore the beauty of Waitomo Glowworm Cave in New Zealand, illuminated by thousands of glowworms.
3: Journey through the awe-inspiring chambers of Carlsbad Caverns in New Mexico, home to stunning rock formations.
4: Marvel at the mystical Crystal Cave in Bermuda, filled with mesmerizing crystal formations.
5: Experience the ancient beauty of Mammoth Cave in Kentucky, the longest cave system in the world.
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