You walk forward slowly and after a few steps you come to some kind of opening. You're not sure how high it is as it goes beyond your reach. It's fairly average width however, only room enough for one person to pass through by your guess. Upon further inspection (and a stubbed toe) you find that there are stairs leading up...
You:
1.) Go up the stairs? (Available)
2.) Further inspect the room? (Available)
3.) Call up there stairs? (Available)
4.) Sit and wait? (Available)