The Raft

The Raft is an underwater prison designed and maintained by SHIELD for the containment of technology based supercriminals and those who have skills that make them too dangerous or too difficult to contain in regular prison. The original incarnation of the Raft was based on Ryker's Island but after the mass breakouts that occurred prior to the merging of the worlds the prison was moved to the bottom of Long Island Sound. The main entrance to the Raft is through a false garbage scow (hence the name) and an underwater elevator to the prison where each prisoner is given an individual cell and is kept on 23hr lockdown to reduce violence between prisoners and opportunity for escape.