Not all of us can just teleport willy-nilly y'know. We especially can't just go to a pocket dimension, get a a Spacial Distortion potion or go look for one in the Wizardlands because WE ARE ALREADY IN THE WIZARDLANDS! Spoiler Evidently, a fountain is blocking my way. And I am not a Mathemancer, sadly. Also, there is a switch in one of the discovered rooms but what I have learned of switches in the Wizardlands is that they summon EVIL CLONES which spell my doom and we don't want that, now do we? (or maybe you do, I wouldn't know how sadistic you are either way, but thanks for visiting this thread anyway!)
Umm... not all switches summon evil clones. Some do... other things. You can recognize the room type with the evil clone-summoning switch pretty easily. And judging by the minimap in the upper right-hand corner, you haven't found that kind of room in your current wizardland.