2. Ice Cave Near The Mutnovsky Volcano, Russia 3. Naica Mine, Mexico 4. Vatnajokull Glacier Cave, Iceland 5. Batu Caves, Malaysia 6. Mendenhall Glacier Cave, USA 7. Cave in Algarve, Portugal 8. Glowworms Cave, New Zealand 9. Tham Lod Cave, Thailand 10. Kyaut Sae Cave, Myanmar 11. Marble Caves, Patagonia 12. Antelope Canyon, USA 13. Phraya Nakhon Cave, Thailand 14. Ellison’s Cave, USA 15. Reed Flute Cave, China | |