From the front page of the PDF:
A One-Round D&D LIVING GREYHAWK®
Iuz’s Border States Meta-regional Adventure
Some say death rides on every passing breeze, but a little wind won’t stop you from a trip to the top of the Yatil Mountains, where you are told there is an ancient weapon to be found; a weapon that you may be able to use against the machinations of the Old One. The Organization has sent you on a quest key to the survival of the free peoples of the Flaness. Part Four of the Machinations plot line, an adventure for APLs 8 to 14. To participate in this scenario, each table must include at least one PC who has played the previous three parts in this series. The same PC need not have played all three parts as long as all three modules have been played amongst the PCs represented.