It Would Work

[Linux.Blue]

Too bad Ingmar Bergman isn't alive and doing films. He and maybe Stanley Kubrick and really the only two directors I'd trust in making Penumbra. Almost any hollywood director would turn it into something sour.

For fun, I had thought about how Penumbra would be if it was a movie.
My own opinion (very rough draft; sort of quick. short version)

At the funeral where his mother is being buried. At the house, he talks with some relatives; maybe some about his father. His fiancee comes in late; apologizes for it. they may talk some and then another scene comes. possibly getting the package/letter from his so called dead father.
this sets both Philip and his fiancee (whom I call Anna) out to Greenland. Once they find the hatch and crawl down, the ladder breaks.
From this very moment to the end of the entire story, there is no more video of the outside world. ONLY the caves/shelter. this gives us the ultimate feeling of being trapped.
First (or couple) night, they head off to bed; only to find out that Anna is missing when he wakes up.
Again, vital; we no longer hear from her or see her. We don't see what her status is, where she is, NOTHING.
It's now Philip, no one else; until at some point, Red comes into the picture (audio actually); when Philips picks up the walkie talkier/com radio.
some hallucinations occur. Philip is obviously trapped, reading some letters, hearing Red talk about whatever, trying to find Anna.

I'd figure the start (before hitting the caves) could last maybe 30 or so minutes into it. Obviously, I haven't thought too much of it; being it's only for fun; but if you could imagine an Ingmar Bergman film; it may be a great film.