A One-Round Living Greyhawk Duchy of Urnst Adventure
From the introduction:
The Abbor-Alz Mountains hold many mysteries from the past as well as the present. Even the most secure of fortifications are not free of the taint of evil. Not all is lost though. Allies can come in many forms and from many places. Clever and resourceful adventurers can do amazing things, even beginners. Delve in the hidden evils under the safest place in the Abbor-Alz. You might even live to tell about it, but I wouldn’t bet money on it.
An adventure for [character levels] 2 - 6.
This is a Ducal Guard Module.