The Tunguska explosion refers to a massive explosion that occurred on June 30, 1908, in the Tunguska region northwest of Lake Baikal in the Siberian region of Russia (now part of the Korema region of Russia). The power of the explosion is 1000 times that of the Hiroshima atomic bomb, and it is one of the biggest unsolved mysteries in human history. The explosion caused the instantaneous destruction of trees within a range of hundreds of square kilometers, and buildings in the surrounding area were knocked down, causing a strong sense of shock and light. However, due to the distance from human settlements at that time, there were no casualties. To this day, the specific reasons for the Tungus explosion have not been accurately explained.
In an alternate timeline, the Tungus Explosion occurred in the Northwest of Lake Baikal, Russia, but with a key factor changed. Instead of being caused by a meteoroid, it was triggered by a secret experimental weapon developed by a clandestine organization known as the Black Hand. This catastrophic event altered the course of history and set the stage for a new era of technological advancements and geopolitical tensions.