The most comprehensive PDF is likely (specifically the section regarding the Duchy of Urnst).
Not all PDFs are created equal. Since Gunderholfen was never officially published by a major company like Wizards of the Coast or Paizo, the digital copies available are user-created. Here is why finding the best PDF is critical: gunderholfen pdf best
– Sometimes phrases like this are generated for SEO or file-sharing sites to attract clicks without real content. The most comprehensive PDF is likely (specifically the
: The complex is built within an ancient, abandoned dwarf hold that has served as a battleground for arch-liches, cultists, and wizards. gunderholfen pdf best