Well, better late than never right? (The original is black ultra-fine Sharpie, but it turned to grey-ish when I scanned it. I tried to re-color it, and this is the result. Also not visible, my pencil hatching - oh well.)
It's pretty much linear as dungeons go. In cavern 14, I think I should have put a secret tunnel connecting it to cavern 4.
While it may not be art, I think it could be usable at a table.
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Feel free to use it, if you want. If you stat it out or anything, I'd love to see it.