Documentary Detective is a series of books investigating mysterious tragic cases. The story of the death of 9 tourists at the foot of the Mountain of the Dead, where, according to legend, 9 shamans found their last shelter, shrouded in secrets and mysticism. For more than half a century, there have been disputes about the causes of that tragedy. What caused them to cut up their tent in terror at night and flee the parking lot without looking back? What explains their numerous injuries, injuries and traces of radioactive contamination? Are there any pages "closed" by the authorities in this story in order to prevent "information leakage"?