I traveled to an alternate universe and, naturally, the first thing I did was hit up some used game stores. Disappointingly, there were only 2 differences between this alternate universe and our own:
1-There was a D&D module there that doesn't exist in this reality.
2-Instead of being used for the cover of a well-known classic metal album, the illustration above was used for the cover of that D&D module. (And, having perused it, I'll say the choice was both appropriate and eloquent.)
Your turn: Tell us the name of this module and tell us what it was like running it and/or reading it.