while trying the mine tileset I found something funny.
you can escape a mine area in a funny way but there is some issue at the end.
place a mine_ceiling_shaft anywhere on a mine map (1 celing)
then place some ladders under the shaft, on different height.
Let's says 3 ladders: the first on height 0, the 2nd on height 1, etc..
then place an invisible teleporter on the same area than the shaft, at an eight of 3
and set the target destination of your choice (if you don't the teleporter don't work)
now you can climb ladders, and get of the level by a ceiling shaft
of course there is one issue, the teleport:
it teleports you at the desired cell, but at an height of 3, that means if you are not a bird, thing can get bad for you
I tried to place all objects in a -3 floor level with a 0 ceiling. Now the party get out on the ground of the selected level
the transition is just a little weird, as you seems to get out of the ground.