Review of the controversy surrounding the Habeler/Messner ascent of Mount Everest in 1978 and how Messner silenced all the trolls with his 1980 summit.
Covers the details of the route as told by Messner in The Crystal Horizon.
Fair use:
https://www.youtube.com/watch?v=PAVTEC5P3LU
https://www.amazon.com/Crystal-Horizon-Everest-First-Ascent/dp/0898865743/