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Q&A How to estimate the depth of a pool of water from a distance above?

In a few episodes of "Man vs. Wild", survival expert Bear Grylls was seen jumping off a cliff into a pool of water below. He made some rough estimation of the depth of the pool before making the de...

2 answers  ·  posted 11y ago by Question Overflow‭  ·  last activity 9y ago by System‭

Question survival