why didn't they just burrow underground? I've read about 420 pages of this book and the one thing I was thinking almost since the start of this book was why doesn't someone try burrowing underground? I think it's at least implied that the dome goes underground by why don't they try digging to see how far underground it goes? Maybe they could make a tunnel and get the people out or at least get some supplies in the town. Do they ever do that in the novel?