Quote Originally Posted by Metastachydium View Post
(This looks like a good time to get back on this one, so) I personally believe that the corridors behind each door are mostly straight and they lead to shafts. The length of the corridors varies, so the shafts do not open into each other. The depth of the shafts varies, so there is enough space for many dungeons because they are not on the same level.
But by MitD's own comment, they are visually complex dungeons, which is something that a straight corridor wouldn't be described as, no matter how many monsters were in it.