INSIDE THE VIET CONG TUNNELS

So here I am in Cu Chi one of the 163 miles of tunnels north of Saigon that let the Viet Cong appear and vanish as if by magic and led to some of the fiercest bombing and defoliation in the war. It's weird down here. So come along for the tour. I guarantee you'll see more than the inside of my nose.

First of all note the tiny opening into the tunnel. You enter arms over your head and close the trap. As you can imagine, when it's properly in place it's impossible to see where it is. Poof! you'...