Lara Winslet is an expert geologist in volcanology. She is together with her team of work on a volcano to conduct surveys. At the end of a working day, Lara decides to stay a little longer to finish an exam and she remains so alone. Returning, she has an accident, falling inside a hole in the ground and remains blocked inside there, where no one can neither see nor hear her.

https://www.imdb.com/title/tt8347960/
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