The tunnels were used by Viet Cong guerrillas as hiding spots during combat. It was also used to serving as communication and supply routes, hospitals, food and weapon caches and living quarters for numerous guerrilla fighters. The tunnel systems were of great importance to the Viet

This tunnel flows into Niagara Falls, emerging behind the pummeling curtain of water that nearly everyone in North America journeys to see at some point in their lives.