First mentioned in Day 111.
One example of a dungeon within Grifos is Dyushisu.
The main income of Labyrinth Cities comes from the adventurers that enter their dungeons and return with dropped items and treasure. There are also some that seek to challenge the dungeons, determined to find their own path to follow. To help outfit these adventurers, there are shops for weapons, armor and magic tools. There are also people that run shops that sell second-hand magic items, including tools that improve the profitability of hunting.