Ancient salt-boiling sites excavated in Hebei
Archaeologists are conducting excavations of several salt-boiling sites constructed during the Tang Dynasty (618—907) in Huanghua, Hebei province. The majority of the sites are intact, although some are damaged. The diameters of the sites range from 1 to 6 meters. There are also a number of ash ditches and holes around the salt-boiling areas. (Photo/Xinhua)
