Adam, the OSR ambassador to Kickassistan, made an excellent point in the comment section of my map post below. Why not post all the maps for the published levels of Beneath the Ruins? Why not, indeed? Henceforth, you can click your mouse above for all five juvenile scrawlings, as well as whatever future levels get published. Perhaps soon I'll post the sideview.
Incidentally, we'd love to hear any stories from those who've run, or played in, Beneath the Ruins. Those I've heard so far were hilarious and I really enjoyed seeing how individual referees modified and reskinned sections.