That's freaky man....The earth is so powerful and unpredictable, I wouldn't be suprised to know that many civilizations have been produced, evolved, wiped away, than produced again..... Do we really think that this is the first time technology has gotten this far?
[ame="http://www.youtube.com/watch?v=F3-XCs_ZMZE"]YouTube- RTW Trip #12. Darvaza, Turkmenistan. Gas Crater‎[/ame]