Darius naturally was not done. He pointed to the eighth item that Oliver had taken out, which was the unremarkable copper key.
"That key opens a chest that contains the map to an unclaimed dungeon somewhere on the Fallon Continent. The previous owner hid the map because he did not have the strength to claim a dungeon for himself, so he had planned to sell it. As for what happened to him, I do not know."
Darius naturally did, as his upgraded Analyze skill could pull out a lot of information that pertained to an item's history, not just its use. The actual owner was a peasant in one of the 300 homesteads of Andrato.
The dungeon itself should be near the north, closer to the Plains of Death. However, without the chest, this key was technically useless. Darius did not know where the chest was, but he was not bothered.