The only secret room in the fungal caves, the vault is a 3 by 3 container comprised of 6 shelves surrounding a cauldron. All the shelves contain various helpful [[liquids]] and [[carrot|carrots]], and the [[cauldron]] in the center will also be filled to the brim with another helpful liquid. Very hard to find, but very good rewards for doing so. Appears in any level.
===Other notes:===
The same evil developer has also hard coded in 2 things of note in the Fungal Caves. One, a [[spider|giant golden spider]], will always appear on one of the top 3 levels and may useful for farming money. The other is a free scroll randomly put in a non-special room on the bottom 4 levels... with a large mine underneath it.