This man became a kind of a legendary figure in Latin America. He was an American aviator, but locals considered him a mysterious hero of great wealth and secrets. There was a legend that he hid diamonds or gold in some secret place. The thing is that the man was the first to discover the highest uninterrupted waterfall in the world (later it was named after him - the Angel Falls) while local inhabitants had never heard of it.

More Info: en.wikipedia.org