get keys by sleeping elf by sneaking (kinda lookes like a banana peel on the ground)then
find all the doors to the left of were you found the keys and open each door (watch out
for traps) after you get 13 go to the room with the barrel the button and the trap door
one dwarve will get in the barrel then role it over the trap door then press the button
the door will open -repeat-**untill all the dwarves are out i dont know how to get
you out but i hope that helped :)