Lanefan
Victoria Rules
If it's not too late I'll add to the already-listed plugs for L1 Bone Hill (great dungeon design, lots of ways in and out, lots of choices once inside), Lost Caverns of Tsojcanth (if your group is masochistic enough to want to map lots of irregular-shaped caverns), and Forge of Fury (probably the best d02-or-later module I've seen).
Another one I'll lob out there is Forgotten Temple of Tharizdun. Here you can try mapping both the outdoors and the dungeon (half the adventure takes place before you get there, if the DM so decides), though the dungeon itself doesn't have nearly as many in-out choices or paths between levels as Bone Hill.
[MENTION=87576]Scrivener of Doom[/MENTION] - I've been looking for a paper copy of Caverns of Thracia every time I've been at GenCon, so far no luck; but I've heard many good things about it.
Lan-"the Rappan Athuk mega-dungeon would keep your group mapping for years except it would kill their PCs long before then"-efan
Another one I'll lob out there is Forgotten Temple of Tharizdun. Here you can try mapping both the outdoors and the dungeon (half the adventure takes place before you get there, if the DM so decides), though the dungeon itself doesn't have nearly as many in-out choices or paths between levels as Bone Hill.
[MENTION=87576]Scrivener of Doom[/MENTION] - I've been looking for a paper copy of Caverns of Thracia every time I've been at GenCon, so far no luck; but I've heard many good things about it.
Lan-"the Rappan Athuk mega-dungeon would keep your group mapping for years except it would kill their PCs long before then"-efan
