... okay, then. Aloy hesitates for a moment, then reaches out to touch the fog, or the lack of the surface, or whatever it is. She pauses, frowning, when she sees the mark on the back of her right hand, a crescent moon around a 2, but honestly that's one of the less weird things going on. One thing at a time. This is the only thing that looks like an exit, so this is what she's going to try to investigate.