The Mysterious Wall (Russian: Таинственная стена, romanized: Tainstvennaya stena) is a 1967 Soviet science fiction film directed by Irina Povolotskaya and Mikhail Sadkovich.
This strange Wall attracts scientists who in the process of research find out that it causes the viewer to see different visions from the past.
All of them take an active part in discussions about what the Wall is, fix the locator, experiment with it, and come to the hypothesis that hallucinations are caused by Martians who are studying life on Earth in this way.
The culmination of the film is the moment when Lena during one of the phenomenon of mirages receives a clue that it is possible to make contact by entering the Wall.
Soviet scientists are beginning to prepare a new expedition from a large group of specialists for a detailed study of the Wall.