Electric Gates (as named in the internal data) are obstacles only encountered in the Command Center of the Space Pirate mining facility in Metroid Prime 2: Echoes. They exist in the tunnels underneath the main floor, turning on and off at regular intervals. Their original purpose is unclear; it is possible that they were used as a form of pest control. The gates pose a problem for Samus, who can access the tunnel with her Morph Ball, as they are hazardous if she comes into contact with any of them. There are six in total in the tunnel. One of them blocks access to the tunnel's Missile Expansion.