The tunnels of Củ Chi are an immense network of connecting tunnels located in the Củ Chi District of Ho Chi Minh City (Saigon), Vietnam, and are part of a much larger network of tunnels that underlie much of the country. The Củ Chi tunnels were the location of several military campaigns during the Vietnam War, and were the Viet Cong's base of operations for the Tết Offensive in 1968.
Entrance sign at the tunnels.
Part of the tunnel complex at Củ Chi, this tunnel has been made wider and taller to accommodate tourists.
A trap door on the jungle floor leads down into the Củ Chi tunnels. Closed and camouflaged, it is almost undetectable.
The camouflaged trap door, now open.
Secret passages, also commonly referred to as hidden passages or secret tunnels, are hidden routes used for stealthy travel, escape, or movement of people and goods. They are sometimes inside buildings leading to secret rooms.
View inside the Passetto, the secret passage between Vatican City and Castel Sant'Angelo in Rome, Italy
A secret passage in Bran Castle, a 14th-century fortress in Romania.
A trapdoor on the jungle floor leads down into the Củ Chi tunnels. Closed and camouflaged, it is virtually undetectable.
The camouflaged trap door, now open.
