Tunguska Event

At 7:14 a.m. on June 30, 1908, a giant explosion shook central Siberia. Witnesses close to the event described seeing a fireball in the sky, as bright and hot as another sun. Millions of trees fell and the ground shook. Although a number of scientists investigated, it is still a mystery as to what caused the explosion.

Thanks to DanGasior for music used in video. http://www.freesound.org/people/DanGasior/