A lot of my feedback on the previous writing prompts was about the settings, so I'm following that thread. For this prompt, try to build out a location and the way we should feel about that location. There doesn't need to be any action or even any characters for this prompt, but you can have them if you want. Just try to focus on making sure the physical space feels real.
EDIT: We're changing the rules some - if you don't want feedback, clearly state it, otherwise you'll get it. If you've submitted a story, try to give feedback to someone else.