that have piping and electric wiring and that kind of thing. these are the tunnels we are speak about. these are filled with water. they have been dumping water in to cool out the reactor core and then you have the radioactive water already in there. some of that water, you know, if they can t transport is out of there, they have a hard time doing that. some of that assumingly has been drifting and pooling in these tunnels. like all substructure type of tunnels they need some sort of draining in the event water gets in there and some of those drainch tube you would assume gets out into the ocean and no confirmation of that. when you re talking about 3,000 times now the radioactive iodine that is in the air it s 131