Er... I think I did a poor job of explaining the situation. Here's a crappy diagram.
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;"> ___
k | \
/ |/ \
|Q-O--|</pre>[/quote]There's what you can see so far (it's the northern half). The northwestern part, as you can see, is open. The Q represents the squire on guard (he's leaning against a wall). The k represents the keys (on the wall). The O is the central stairwell. Now, imagine that the space between the O and the characters immediately surrounding it is a circular hallway. Do you see now? Sorry, it's kind of hard to describe.