A One-Round Living Greyhawk Verbobonc Regional Adventure
From the introduction:
A Lortmils area shepherd boy in the far southwest portion of the Viscounty has been telling stories of the "great fortress" that he saw while tending to his sheep in the mountains. Word of this has reached the ears of Thuldon in house Asbury. He sends word for adventurers, especially those who have helped him in the past, to investigate these rumors, as he cannot abandon his forge on the words of a child.
An adventure for characters level 2 - 8.