You got an underground super prison, 600-700 guys in there. Only exit is a large steel wall covering the hole, it's surrounded by a facility with guard towers and offices and all. There's a riot, a lot of people die. They round up all the escapees, throw em in the prison, and lock the hatch up for good. From the on its various stories about the prisoners surviving without outside help. They have to eat rats and bugs, other prisoners
Fighting over territory, trying to escape, helping each other. Should I write this?