She chuckled. "You're right, of course. That wizard was later succeeded by another, and another... it's a fascinating history of wizard-tyrants ruling the land, but the long and short of it is, the ruins lie in the domain of a wizard tyrant who isn't terribly fond of outsiders, and uses very large, very nasty creatures to patrol his realm. And that is, of course, on top of the protections laid over the vault itself."