China's most enduring symbol, the Great Wall, stretches
wooded mountains, from the China Sea to the Gobi Desert.
this colossal undertaking began around 221 BC, at the time of
China's unification, by order of Emperor Qui Shi Huangdi. Older
fortifications, erected in the 5th centum 13C, were thus linked
together to defend China from V1ongolian invasions. To build
wall, which the Chinese also call "the long wall of ten thousand
(one li equals 500 meters), hundreds of thousands of workers
be deported and mobilized, many of them political prisoners.
men lost their lives in the process.
During the Ming dynasty (1368-164-1), the Great Wall was
and strengthened. It look more than one century and over 60
cubic meters (78.5 million cubic yards)
of materials to cover the entire fortification with brick and stone.
The Great Wall is six meters (2U feet) thick on average. The
varies between 6 and 18 meters (20 and 5L) feet). Some
bastions and 15,000 watchtowers mark the length of the