The backstory of Gunderholfen is itself a great campaign hook. It was once a proud dwarven city, the glory of its people, until they mysteriously vanished under unknown circumstances. Over centuries, it has become a shadow of its former self, now a sprawling labyrinth of ruins where countless monsters, treasure-seekers, and even greater evils have staked their claim.
The (available for purchase on DriveThruRPG ) is designed for maximum convenience for the DM.
: It is a sprawling complex described as a battleground for arch-liches, a base for cultists, and a playground for wizards. : The mega-dungeon consists of 10 main levels (comprising 22 sub-levels) and approximately 930 keyed locations Key Locations
Before you search for the , you must understand what you are looking for.
In the world of tabletop roleplaying games, the "megadungeon" represents the ultimate test of endurance for both players and Game Masters. Gunderholfen , a 420-page tome created almost entirely by G. Hawkins, stands as a modern monument to this classic tradition. By blending "old-school" design with massive scale, the Gunderholfen PDF provides a masterclass in how a single location can serve as the foundation for an entire multi-year campaign. A Legacy of Stone and Mystery
The book features black and white illustrations that adopt an "old school" or, at times, amateur aesthetic, fitting the classic feel of early tabletop gaming.
Gunderholfen, [First Name]. [Title of Document]. PDF file. [Publisher or Institution], [Year]. URL: [direct link to PDF] (accessed March 23, 2026).
With over 400 pages of content, navigating the digital version is much faster for a Game Master (GM) during a session.
As a renowned reviewer himself, author Thilo Graf designed the Gunderholfen PDF with usability as the highest priority.
: 10 distinct levels including a "Floating Level" and a demi-plane.
The lore of Gunderholfen blends deep subterranean history with planar weirdness. The complex was originally carved out as an . Over centuries, it evolved into a bloody battleground for arch-liches, a hidden base for sinister cultists, a playground for reality-warping wizards, and ultimately, a tomb for unprepared treasure-seekers.
Gunderholfen is a classic megadungeon designed for character levels 1 to 10+. It is technically built for OSRIC (a 1e AD&D clone) but is highly compatible with nearly any OSR system, including B/X, Labyrinth Lord, and Old-School Essentials.