Looks like the scientist in question couldn't read Russian. So they never found out the lake had been there long before the explosion.
http://en.wikipedia.org/wiki/Tunguska_event#Lake_Cheko
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Looks like the scientist in question couldn't read Russian. So they never found out the lake had been there long before the explosion.
http://en.wikipedia.org/wiki/Tunguska_event#Lake_Cheko