Dungeon Module B3.5
We all know the controversy surrounding Jean Wells' original orange-cover version, so there's no need to rehash it here. Suffice it to say I downloaded the original version when Wizards of the Coast made it freely available and only later picked up Tom Moldvay's revised green-cover version, so my opinion of the module was formed accordingly. The exploration of a long-abandoned ruin was far more in keeping with the style of adventure I wanted to run than the ham-fisted, fairy tale plot of the revision. Still, some of that Wells quirkiness was too far out there for my taste, and Moldvay did an admirable job of applying more consistent logic to the adventure. Thus, I resigned myself to reconciling the two versions into a single coherent whole.
Works best with a large party of mid-level characters. Note this scenario does not require the source (original) modules for play - it is self-contained.