Participants to the 2009 field researches on Lake Cheko

Romano Serra observes with the Scanning Electron Microscope a particle embeded in a tree sample collected in 1991 by the first Italian expedition in Tunguska.
Romano is a veteran of Tunguska explorations. He has done field researches in the Tunguska site in 1991, 1998, 1999, 2002 and 2008.

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