The Tunguska explosion (or Tunguska event), was a massive explosion that occurred near the Tunguska River in what is now Krasnoyarsk Krai of Russia, at 7:40 AM on June 30, 1908. this extract contains film of a re-creation of the blast patterns, interviews with various scientists, and opens with possible scenario of it happening to New York City. clips of interviews with Dr. Kevin Zahnle and Dr. David Morrison. Подкаменная Тунгуска