The Tunguska Event took place in Russia due to an explosion above Siberia, leaving 770 square miles of scorched or blown-down trees. An asteroid colliding with the Earth is the main theory of what happened.
The Tunguska Event took place in Russia due to an explosion above Siberia, leaving 770 square miles of scorched or blown-down trees. An asteroid colliding with the Earth is the main theory of what happened.