Secret Files: Tunguska

(Currently available in the UK/EU only) On the 30th of June 1908, an explosion with the destructive power of 2,000 Hiroshima bombs rocked the Tunguska region in central Siberia, felling more than 6,000 square metres of pine forest. The explosion could be heard within a radius of 1,000km. Witnesses saw an oblong object, glowing in a blueish-white light, fall from the sky. A 20km high pillar of light was followed by a mushroom-shaped black cloud. The three following nights were so bright all over Europe that you could read a newspaper outside without additional light. In California, on the other hand, they noted a continuing reduction of sun light. Up to this day it is still not clear what really triggered the Tunguska catastrophe.