Keys

Keys can be acquired by foraging. The keys have different chances to drop from the existing loot tables, depending on the Key: Some key values:

Copper Key: 1% Silver Key: 0.25% Gold Key: ~0.042%

Keys can be used inside Vulcan City Treasury/Bank by using some Cold $LAVA to open specific chests. Opening a chest gives access to 2 separate loot tables, one for Cold $LAVA and one for in-game items, depending on the Key used.