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  1. Rushmore Cave - Keystone, South Dakota - Vintage Sign: Retro Travel Poster
  2. Light show, inside the Caves d'Arta, Llevant, Mallorca, Balearic Islands, Spain
  3. Rock And Cave
  4. Natural Stone Bridge and Caves, Adirondacks, New York
  5. Zhijin Cave, the largest in China at 10 km long and 150 high, Guizhou Province, China
  6. Lotus
  7. Colossal Cave Mountain Park, Arizona
  8. Italy, Sardinia, Codula di Luna valley, Su Palu cave
  9. Cenote Xkeken, Dzitnup Near Valladolid, Yucatan, Mexico
  10. Lewis and Clark Caverns State Park, Montana