It has not exits - only the way you came in.Every time you enter it, the whole room rotates clockwise. This could also mean it traps you in some circumstances!
Hope that makes sense!
Oh, wow, I hadn't understood that in the rules... Ok, I think I have it all pretty clear now. Just one more question and I think that I will have finished with the doubts. Is there a penalty for going through previously explored rooms?... In Dark Fort, there are roaming enemies lurking if you undo your steps but I don't think I've read anything about it in this game.