The famous Cu Chi Tunnels are an underground network, heavily
used by the Viet Kong army during their war with the USA. At their
peak, the dense network of tunnels covered an amazing 155 miles
(249 kilometres) in the Cu Chi area alone, and at their very
longest the tunnels stretched from the outskirts of Saigon to the
Cambodian border.
Parts of the complex were several storeys deep, filled with
trapdoors and living areas. The conditions in the tunnels were
never ideal, but at times they verged on appalling; sickness was
rampant in certain sections of the tunnels on many occasions. Yet
their importance in helping the Viet Kong avoid detection, win the
war, and achieve reunification cannot be overestimated; and as such
they are today revered by many of the Vietnamese people. The
tunnels have now been enlarged slightly, to make them more easily
accessible for the many visitors who come to what is almost a place
of pilgrimage today.