During the Vietnam War in the late 1960’s early 1970’s the area of Cu Chi was heavily bombarded by the American’s using their huge B52’s and monstrous fire power. The Viet Cong in the area moved their offensive underground in an expanded tunnel system first used during the war with the French in the late 1940’s. The tunnels were an incredible maze holding hospitals, storage for food and weapons, schools, weapons factories and command centres not forgetting hundreds if not thousands of people. They stretched over 200km through the country and had an amazing array of booby traps and security mechanisms built in for protection. The entrances doors were in many cases no bigger than a A4 piece of paper and very well disguised.Today the some of the tunnels remain and have been widened to allow visitors to experience the conditions and ingenuity of the Vietnamese people. Many small tourist operators from Ho Chi Min City offer day trips to the tunnels which are about 70 km out of town.