• `skocjan Caves (Slovenia)

  • Cave of Giant Crystals (Mexico)

  • Majlis al Jinn Cave (Oman)

  • Cave of the Ghost (Venezuela)

  • Waitomo Glowworm Cave (New Zealand)

  • Tremendous Cave System (Iran)

  • Eisriesenwelt Ice Caves (Austria)

  • Mammoth Cave (USA)

  • Dongzhong Cave (China)

  • Carlsbad Caverns (USA)

  • The Reed Flute Cave (China)

  • Cappadocia Cave City (Turkey)

  • Galos Salt Cave (Chicago)

  • Ice Caves (Antarctica)

  • Lechuguilla Cave (New Mexico)

  • Crystal Caves (Bermuda)

  • The Underwater Caves of The Riviera Maya (Mexico)

  • Underwater Caves (Fiji)

  • Cave of Fingal (Scotland)

  • Onondoga Cave (Missouri)