Members of the scientific expedition of the Siberian state foundation Tunguska Space Phenomenon have managed to uncover blocks of an extraterrestrial technical device, which crashed down on Earth on June 30th, 1908. In addition, expedition members found the so-called "deer" - the stone, which Tunguska eyewitnesses repeatedly mentioned in their stories. Explorers delivered a 50-kilogram piece of the stone to the city of Krasnoyarsk to be studied and analyzed.