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Photos: The World's Weirdest Geological Formations

  • Weird Geology

    cave-of-crystals-mexico-110912-02
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    CREDIT: Alexander van Driessche Cave Of Crystals Mexico
    The Cave of the Crystals in Naica, Mexico.
  • Cave of the Crystals, Mexico

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    CREDIT: Alexander van Driessche Cave Of Crystals Mexico
    The Cave of the Crystals in Naica, Mexico.
  • Eye of the Sahara, Mauritania

    Dutch astronaut Andre Kuipers snapped this photo of a lava crater in Mauritania from the International Space Station.
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    CREDIT: ESA/NASA lava-crater-sahara-120326
    Dutch astronaut Andre Kuipers snapped this photo of a lava crater in Mauritania from the International Space Station.
  • Giant's Causeway, Northern Ireland

    2012 London Olympics
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    CREDIT: Giant's Causeway image via Shutterstock Giant's Causeway
    Giant's Causeway in Northern Ireland.
  • Sailing Stones of the Racetrack Playa in Death Valley, Calif.

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    CREDIT: NASA/GSFC/Cynthia Cheung. Rov Rocktrail
    A roaming rock at Racetrack Playa. Scientists have ruled out animals, gravity, and earthquakes as possible culprits for the stones' strange movements.
  • Ice Towers of Mount Erebus, Antarctica

    weird geology, natural phenomena
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    CREDIT: Mount Erebus Volcano Observatory, NM Tech Ice tower, Mt. Erebus
    Phil Kyle standing in front of an ice tower called "Harry's Dream."
  • The remnants of the Oklo natural nuclear reactor, Gabon

    weird geology, natural phenomena
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    CREDIT: Robert D. Loss, WAISRC Natural Nuclear Reaction Powered Ancient Geyser
    The natural nuclear reactor in the Oklo mine of Gabon burned uranium two billion years ago. Uranium oxide remains are visible as the yellowish rock.
  • The Eisriesenwelt ice cave, Austria

    weird geology, natural phenomena
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    CREDIT: www.eisriesenwelt.at Eisriesenwelt ice cave, Austria
    A person stands next to one of the ice formations in Eisriesenwelt.
  • The Tessellated Pavement of Eaglehawk Neck, Tasmania

    weird geology, natural phenomena
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    CREDIT: Tessellated pavement image via Shutterstock.) The Tessellated Pavement of Eaglehawk Neck, Tasmania
    The natural phenomenon of tessellated pavement in Tasmania, caused by erosion of tectonic cracks in the rock.
  • Pamukkale, Turkey

    weird geology, natural phenomena
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    CREDIT: Pamukkale image via Shutterstock.) Pamukkale, Turkey
    Pamukkale, limestone terraces that have formed over time in Turkey.
  • Fingal's Cave, Scotland

    weird geology, natural phenomena
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    CREDIT: Fingal's Cave image via Shutterstock.) Fingal's Cave, Scotland
    Fingal's Cave, Staffa Island, off Isle of Mull, Scotland.
The remnants of a 2-billion-year-old nuclear reactor and a cave of house-sized crystals might seem too strange to be natural, but the world is apparently full of such bizarre natural phenomena. Here are 10 of the weirdest geological structures on the planet.

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