Silence
You rise from a restless slumber, careful not to disturb the comatose figures of the others. You move around what seems to be a small stone room. There are a few large cube-shaped objects, perhaps boxes or crates. They seem empty to the touch.
At the far side of the chamber, you feel a small wooden staircase rise up. You climb it quietly, one step at a time. It seems to end abruptly in another stone wall.
There are no exits to be found. There is no light. There is nothing at all useful in this space, save possibly yourself.