Facts, questions, and background about the Messner tragedy of 1970. It is the most frequently told and fiercely debated mountaineering drama: the story of Reinhold Messner and the death of his brother Günther in 1970 on Nanga Parbat. A tragedy full of contradictions, accompanied by controversies, suspicions, and accusations. The public only perceives the media-savvy highlights of this story, such as the recent feature film "Nanga Parbat" by Joseph Vilsmaier. However, the actual questions surrounding Nanga Parbat in 1970 cannot be answered this way. Did Reinhold Messner intend to cross the mountain at that time? Or did he descend on the other side of the mountain because there was no other way out with his altitude-sick brother? Why did Messner not clearly indicate an emergency when two other expedition members passed by him?.