Detailed text transcripts for TV channel - CNN - 20170605:04:43:00
Left behind by long-gone workers. the frozen constantly moving and shifting network of passage way. >> requiring continent maintenance, it's important he let us know. >> we're in a process now of taking the depth off the walls and the ceiling. it's a lot of work. >> the lowest recorded temperature at the south pole is 117 degrees below zero. >> we're roughly minus 59. i could tell you that it scorches the lungs and creeps through your heavy way. >> we've melted it and enormous down there with 12 million gallons. it takes that to make it on
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