Under the plains, Klein's P.O.V.
I fall and tumble for a few seconds before coming to a sudden stop as I hit a rock. Once my dizziness passes I slowly pull myself to my feet, I don't seem to be seriously injured, just a few dozen bruises. As I look around I realize I am in a small cave, other than the tunnel I fell out of there is only one other exit, a door.
Not just any door, a large double door that seems to be made of stone. There are carvings all over the door, but to me it just looks troublesome so I turn back to where I fell in. With my strength I should be able to just climb back out without a problem.
If I could reach it, as I am heading for the tunnel I run into an invisible wall. Feeling along the wall it completely blocks me from reaching the side of the cave where the tunnel is, yet I had to have passed through it when I fell in here. A one way wall, it must be magic, so I sit down and enter meditation to take a look.