Cave Facts

    2 facts tagged with Cave Facts

    Salt Mine Hospital
    Salt Mine Hospital
    In Ukraine, there's a thousand-foot-deep salt mine that is used to treat respiratory ailments. Inside, there is substantially less bacteria in the air than in the most sterile room in a hospital.
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    Scientists lit a cave of natural gas on fire in 1971 expecting it to only burn for a few days; it still burns to this day. It has been nicknamed "The Door to Hell".
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