Cu Chi Tunnels & Napalm Girl ( Video )
Over the years the VC developed simple but effective techniques to make their tunnels difficult to detect or disable . Wooden trapdoors were camouflaged with earth and branches, some were booby-trapped . Hidden underwater entrances from riverwere constructed .Trapdoors were installed throughout the network to prevent tear gas . Ben Dinh is small , renovated section of the tunnels system , is near the village of Ben Dinh.r