In the Mountain of the Unknown: Alien Portal 70 min • 2023 • TV-14 • Mysterious Mount Musinè, in the Italian Alps, entwines ancient legends, UFO sightings, and enigmatic underground caves. Director Alessio Pierazzi Starring David White Genre Documentary, Sci-fi Language English In the Mountain of the Unknown: Alien Portal Cast David White Directors Alessio Pierazzi Writers Alessio Pierazzi