Other mistake: They go into the world's deepest copper mine to an underground computer office with windows lit from outside.
Upvote valid corrections to help move entries into the corrections section.
Suggested correction: That is probably exactly how it would look. Most underground facilities are conventional buildings, trailers, or modular units arranged in a large lighted tunnel or cavern. This is the arrangement in Cheyenne Mountain Complex, the previous U.S. Antarctic base (under the geodesic dome), and for offices and data repositories in salt mines. The buildings have windows, and the caverns are lighted to facilitate movement between buildings.
