Prize: 1000 renown points.
A lady archeologist has some problems with finding ancient artifacts. After a small walk, she'll give a scroll with notes regarding the localization of the object. Right after entering, your dog will find the digging place, follow him and dig up the scroll.
Reward (amount of renown points)
Bowerstone Old Town
The Bandit Coast
Reaver's Rear Passage
After finding the last artifact, return to Belle, and she'll unlock the door. Inside you will find Archont's Dream. You can return it to the archeologist, or kill her and take the treasure with you. The stone is quite valuable, so if you need gold, you may have no choice but to get rid of your partner. In the end, the choice is yours.