An Unknown Compelling Force Movie Clip - The Avalanche Theory - The truth of Russia’s greatest unsolved mystery, the Dyatlov Pass Incident, is uncovered in this compelling documentary. <br />DIRECTED BY Liam Le Guillou<br />FEATURING Liam Le Guillou, Svetlana Oss, Yuri Kuntsevich, Oleg Demyanenko, Natalia Sakharova & Mick Fennerty
