[Marcella]

“If we know about those caves (and ground-penetrating radar should give us a pretty good idea of them), then I would be surprised if we didn't have explosive charges buried on top of each of them, ready to collapse them on command.”

The caves are in the Demilitarized Zone (DMZ) and no one is allowed in that area. If one of our guys went into that zone, he would be killed immediately by the line up of N. Korean soldiers that guard that border. Now, if there is all out war, all bets are off in that zone.

[driftdiver]

They aren’t caves, they are tunnels. SK has discovered tunnels big enough to move a few thousand troops in a few hours. Basically big enough to drive a truck through.

The find them primarily with listening devices which detect the sounds of tunneling.

People are in the DMZ each and every day. Heck when I was there you could take a tour of the place. Most people can’t get that close to the actual line but SK and NK has troops within feet of the actual boundary.