Located beneath the city is a sprawling underground district. It was created during the incident that submerged part of the city underwater and is considered uninhabitable by some. Avalon police keep a heavy watch on the district, but despite the stereotype that places of its nature would be a breeding ground for crime, the Underground is a largely peaceful district with residents who just happen to prefer its specific living conditions. Parts of the Underground grew considerably when refugees from Ash arrived to the city.