Located about 70 km to the northwest of HCMC, Cu Chi tunnel is the miniature of the creative and transformed battle of Cu Chi people and soldiers in the fierce fight, lasting for 30 years against the aggressors for independence, freedom of the country. With its victory scale, Cu Chi tunnel went into the history of heroic struggle of the Vietnamese as a legend of the 20th century and became famous in the world. This is a unique and incomparable wonder with 250 km tunnel spreading like cobwebs underground, with the completion of works associated with the tunnels such as trenches, docks, fighting places, tunnels for eating, sleeping, meetings, activities, military, food storage, water wells, Hoang Cam stoves…