The Vault of Stone

 is a location in the Caldera region in Outward.

Description
A dark and ominous cavern. Upon first entering there are no enemies to be found, however after pulling the lever you will release several Ancient Dweller enemies, both inside the Vault and outside in exterior Caldera as well. The lever is in the south-west of the dungeon near two large orange mushrooms and a Chest, it has a white circular sign above it with a black cross and a red hand.

Pulling the lever to release the Dwellers will also begin the secret puzzle to find the hidden Breath of Darkness boss.

Merely spending time inside this dungeon will inflict the player with Haunted, which will refresh every 60 seconds or so.

Enemies

 * 1x Breath of Darkness (after solving the secret puzzle)
 * 6x Ancient Dweller (after you have pulled the lever near the large Mushrooms)

Loot
Artifact:
 * Slumbering Shield - deep in the cave in a room with one Ancient Dweller. it is leaning against something on top of the small hill.

Loot Containers:
 * 2x Ornate Chest
 * 6x Chest
 * 1x Adventurer’s Corpse
 * 1x Knight’s Corpse

Gatherables:
 * 3x Iron vein
 * 6x Mana Stone Vein
 * 8x Hexa Stone Vein
 * 3x Chalcedony Vein
 * 2x Palladium vein
 * 2x Rich Iron vein
 * 3x Fishing Spot (Caldera Pods)
 * 6x Ableroot (Gatherable)
 * 3x Blood Mushroom
 * 9x Star Mushroom (Gatherable)
 * 3x Unidentified Ore Vein (potential)
 * 3x Unidentified Molepig den (potential)
 * 3x Unidentified Roots (potential)