Detailed text transcripts for TV channel - CNN - 20180706:00:53:00
Similar to the cave in thailand where the young boys and coach are trapped. it's similar in other ways too. >> this cave is flooded with snowmelt water. the cave in thailand with flooded with monsoon water. >> reporter: both men begin their scuba voyage into the cave with our cameras to give us a look at the dangers and show us why you absolutely never do anything like this without cave diving certification. just getting into this nearly half-mile-long cave system requires squeezing through a narrow tunnel, and this is not the narrowest tunnel they will face in waters that go as deep as 90 fee...