# Why don't they try digging in Under the Dome?

In the TV series Under the Dome, the military used a MOAB (Mother of all Bombs) to remove the dome problem. In episode 2 one old man tried using digging tractor but Big Jim stopped him because it could explode. Why didn't they try digging into the ground? The military could use non-electronic methods, like lots of men with shovels. Is there any explanation of it in the novel?

At the beginning of the second episode (about 3 minutes in), several people are seen digging with spades, near Joe's house:

Followed by this dialogue:

Joe: Any luck yet?
Man: No, this thing goes down far.

As GµårÐïåñ's answer states, in the third episode Junior (being followed by Julia) go into the tunnels and find the dome goes really far down.

• Shitt...i missed that scene......Now i wonder if dome is not a dome but is a sphere....might be possible. Sep 5, 2013 at 12:47
• Given that in the tunnels the dome is still going straight down and not curving back, I think it's unlikely to be a sphere. Sep 5, 2013 at 13:25
• @DisgruntledGoat it is reasonable to assume that it IS a sphere; however, see my comment below on my post, it may be shallower on the bottom half circle, IF the smaller dome is any indication. Sep 5, 2013 at 17:04
• @DisgruntledGoat But given that the smaller dome found in the woods (at the core of the larger one) is a sphere, it is far more reasonable for the large one to be one, too. Sep 19, 2013 at 13:47

As was revealed in the scene with Junior Rennie going into the tunnels in an attempt to find a way out by going under the dome, the dome extends down into the ground. For all intents and purposes, the assumption is that the dome extends down into the ground far enough that one cannot dig or if they do, it will extend into that void as well. However, I have to admit that seeing the smaller dome in the woods dug up and relocated to the barn, it would stand to reason the same should be doable with the larger dome, although probably to a much greater scale which might be out of the reach of the people inside.

• +1 for mentioning the tunnel scene , i remember it. But using MOAB and not even trying digging from outside Millay looks silly to me. Sep 3, 2013 at 23:48
• I understand in the book, they tried to dig under the dome, but was unsuccessful. It is supposedly more of a sphere than just a dome. Sep 4, 2013 at 0:42
• @Paulster2 right, that's why I said that even if they managed to find a spot they could dig, it would just span into that space and surround them again. Seems anytime you have an opening it will span into it. Sep 4, 2013 at 6:04
• @Ankit They DID try digging, it was in the second episode. Near the beginning I think. Sep 4, 2013 at 9:58
• @DisgruntledGoat but Big Jim stopped that old man from using tractor because it can explode. But why not use Spade. Sep 4, 2013 at 10:19