The Superdeep (2020)

The Kola Superdeep Borehole is the most large-scale secret object of the country. In 1984, inexplicable sounds like the screams of many voices were recorded at a depth of more than 12 kilometers. In the wake of these events the object was closed. A small research team went down below the surface to find out what secret the world's deepest borehole was hiding. What they have found turned out to be the greatest threat in history. And the future of humanity is in their hands...