The Hidden Mushroom is a metaphysical and head shop that is literally located inside of a massive living mushroom. The shop, which is owned and employed by Fritti Humdur, is located on the floor level of the ancient fungus. The head of the mushroom, which is large, semi-flat and naturally hollow, is utilized as the shopkeep's apartment.
Fritti studied extensively to be able to place magical wards on his fungal abode after