added by archaeologs Capital of the kingdom of Au-Lac which existed from 258 to 207 bc. Situated about 20 km northwest of Hanoi in northern Vietnam, it comprised three walls more than 4 km long which surrounded the city in a spiral; hence the nick-name of ‘Conch-City’. When Vietnam became independent from China in the 10th century, C6-loa was again chosen as the site of the capital in order to renew links with the pre-Chinese past. See also Dong-Son.
The Macmillan dictionary of archaeology, Ruth D. Whitehouse, 1983