Siberia
Tunguska, 2008
Scroll ↓ Photographs by Mark Boslough
Expedition X: Siberian Apocalypse was filmed at the site of the 1908 Tunguska explosion on the centennial anniversary, June 30, 2008.
The key point of the Tunguska Event is that there was a tremendous explosion, a great shock wave, an enormous forest fire, and yet there is no impact crater at the site. There seems to be only one explanation consistent with all the facts: In 1908 a piece of a comet hit the Earth.
-Carl Sagan