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On June 30th, 1908, something exploded 8 km above the Stony Tunguska river. About 2150 square kilometres of Siberian taiga were devastated and 80 millions trees were overthrown. Up to now, it is not clear whether the great explosion was due to a comet or an asteroid or something else. We are searching for an answer.

Tunguska region in 1938:
Portion of one of the photos from Kulik's aerial photographic survey (1938) of the Tunguska region.
The parallel fallen trees indicate the direction of the blast wave.

Click for Vanavara, Russia Forecast    Forecast for Vanavara weather
Giuseppe Longo
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Some Videos

1991 Raices de ŕrboles         
1999 The aerosurvey

  1999 The cores       

 2007 A possible crater  

2008 Drowned forest

2010 Clavius crater  

To see enlarged figures with captions, click on the thumbs.               

To see the video list, click on "Some videos".