The Cu Chi Tunnels are seventy five miles of interconnecting tunnels that were used by the Vietnamese armed forces throughout the Vietnamese War (or American War because they connect with it). They served as hiding spots and as routes for conversation and materials. Many troopers even lived in these tunnels https://sai-gon17159.bloggadores.com/29504109/not-known-factual-statements-about-sai-gon-list