If I were in this situation, I would dig a hole in the floor as that comrade had told me to do so. I know there’s a reason behind his words, and I do trust him, so the first action I’m going to take is digging the ground in the faith of finding something in there. Maybe some tools like climbing gears or a grappling hook and a rope to climb the stone wall. Maybe there is a ladder which takes me up to the skylight or a key to get me out of this horrible situation.
