It's the very first room of the dungeon. All you have to do there is to kill or avoid four moldworms, jump on platforms, try not to get sucked into sand, reach the chain, kill three stal-whatever-their-name-was-skeleton-things and pull the chain to open the door...which apparently does not open. And no, with iron boots on Link refuses to pull the chain. He just stands while holding it. Wolf Link can't do it either.
I don't know what else to try!
I don't know what else to try!
