Tunguska Event

The Tunguska Event referred to the impact of a meteor in the Tunguska province of Russia on 30 June 1908, creating a huge crater.

The energy released by the impact caused the Great Divide to open in Russia, allowing some of the Charrl to enter that time period from 22,000. (PROSE: Birthright)

The Third Doctor attempted to take Liz Shaw and Jo Grant to witness the meteor impact but the TARDIS instead materialised in St. Petersburg in December 1916. (PROSE: The Wages of Sin)

Another account suggested that the impact may have been caused by the crash of a Prastaki trading vessel in the Tunguska Basin. Later in 1908, the Tunguska Scroll was recovered from the crash site. It was acquired by UNIT on 4 June 1972 from a private collector and placed in the Black Archive. (TV: Enemy of the Bane)

After her defection from the Soviet Union to the United Kingdom in 1958, the Czech scientist Dr. Nadia Červenka provided the Sen-Gen Facility with a neuro-chemical hallucinogen developed using a yellow fungus which was discovered in the crater. It was believed to be extraterrestial in origin. (AUDIO: Artificial Intelligence)

In 2011, Henry van Statten's scientists discovered the cure for the common cold from alien bacteria in "the Russian crater," presumably that created by the Tunguska Event. (TV: Dalek)