http://www.sciencealert.com/this-new...too-much-water
TF
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Welcome to the Cave Diver's Forum.
Know your limits
http://www.sciencealert.com/this-new...too-much-water
TF
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"Men wanted for hazardous journey. Low wages, bitter cold, long hours of complete darkness. Safe return doubtful. Honour and recognition in event of success."
Earnest Shackleton
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