[CookieMon]

Damnnn, you're going to be stuck in a tent for a year, and they don't even put in some windows.

The surroundings look martian enough. They weren't trying to artifically simulate a day/night cycle were they? (No articles mention this)

[bbctol]

Not having windows seems like an important part of the test! It looks like there might be a small porthole on one of the sides, but I doubt a real Martian habitat would have much more than that, and the psychological impacts would be interesting to know.