The archive was a maze of towering shelves, crammed with yellowed tomes and forgotten blueprints. I lit a lantern, its flame casting flickering patterns on the walls. Searching the shelves, I pulled out a volume on ancient energetics. The medallion fit into a slot on its cover, unlocking a hidden compartment. Inside, a map unfolded, detailing the Undercity’s layout with notes in Father’s handwriting.