ZPM room

The zpm room is a room in atlantis that has the zpm's in it.In the zpm room there is a trianguler shaped stand that the zpm's come out of but when this happens the zpms aren't powering the city any more.It has also been shown that you can make fail safes in the zpm room,like when elizabeth wier was thrown back in time the ancient jonas made the fail safe to start the stardrive of atlantis so the city would rise when the expdition came throw the stargate from earth,in the zpm room.