I guess the first thing you need to know is that you can\'t get out of the dungeon the same way you came in (i.e. the platform is not a lift).  The second thing you need to do is to wander around aimlessly.  It is not always safe to assume that high road/path always leads the way out (i.e. first thought since you fell downward to get there).  You need to find a huge room with a hudred or so vertical pillars in it.  You\'ll know it when you see it.  The exit is somewhere around there and you\'ll eventually go up a very long set of very steep ladders and stairs to get out.  Hope that helps.  Cheers,

Omnivis