I that case it's what Fylimar wrote.
But walking back to the Sanctum and the village, has somebody pieced together the exact(ish) timeline for the fall of those? I feel much of it hints towards Ketheric along with some internal medical malpractice being the cause of the their fall, which sets both a century in the past. But then there are elements that feel much more recent, like the remnants of children's games.
I guess it wasn't a one-time event. There were dark justiciar raids during Ketheric's Shar rule, but the village may have resisted. There's also a note somewhere, but I don't remember the exact content, which warns not to trust some other kind of warriors coming in to "defend" the area. So the village might be under recurring attacks for a long period, but finally abandoned after the absolute settled in the old Selune temple and their Goblin hordes took the weakened village.
(Think of some European towns that had repeated Viking attacks , but crumbled only after decades of resisting this)