Vault of Echoing Chains

After clearing the lower galleries of the dungeon and forcing open a rusted cell door, the party discovers a sealed vault chamber whose iron chains have long since crumbled to dust. Inside they find a careful hoard left by a combination of a once-pious watch order and opportunistic tomb-robbers. Practical supplies and coin lie alongside true magic and rare components. The Bag of Holding and a clutch of spell scrolls point to the vault having been used recently by a roaming spellcaster. The adamantine ingot and loose gems suggest the chamber once served as a temporary safe deposit for a minor noble. Hidden among mundane supplies is a tinkerer-priest's Echoing Lantern, a custom trinket that will be especially useful for navigating the dungeon's traps. Some pieces appear tied to a wider mystery, as indicated by the reliquary fragment and map scrap. Overall the haul is balanced for a level 10 party: valuable gear and materials to outfit an artisan or smith, reliable combat aid in the form of the ring and cloak, and a few expendable magical resources for emergency uses.