Best old style AD&D dungeon crawlers ever

[DMH]

As much as I would like to suggest Barrier Peaks or Dwellers of the Forbidden City, both are on the large size (and BP has a lot of technology that you might not want to add to your campaign).

By themselves A1 and A2 (rather than using all 4 as A3 is a city and A4 is stupid) are great adventures with plenty of traps and monsters (and some people to interact with).

 

[Olli]

my vote goes to B4 "The lost City"!

Man, what memories of a whole wasted summer spend underground hunting Zargon...

 

[grodog]

G3 is pretty darn big and may exceed his "not overly large" criterion.

It's only 3 levels (and most of the rest of the modules we're talking about are 2)---Caverns of Thracia is at least 4-6 levels + sublevels!