SoFla does not, can not have tunnels, though. About anything south of lake Osceola is on limestone (which is why draining caused so many sinkholes back in the day), which is essentially CHALK. So unless deep state worked out how to insert negatives, seal and then drain them without anyone noticing, which technically isn't impossible but pretty darned difficult, I'm not sure what that nutjob is talking about besides a signal to others involved in the shenanigans.