Archaeologists have discovered ruins of the Great Wall along the border of Northwest China's Ningxia Hui autonomous region and Gansu province, dispelling a common belief that there were no sections of the wall in this area.
The remains, nine sections with a total length of more than 10 km, are believed to be part of the Great Wall built during the Qin Dynasty (221 BC-206 BC).
Six sections of the ruins, constructed with stones or loess, stretch about 10 km between Nanchangtan Village of Ningxia and Jingyuan County of Gansu on the southern bank of the Yellow River. Because of flooding and natural degradation, the height of these sections of the Great Wall has been reduced to one to five meters. The other three loess-made sections are located in Damiao region of Jingyuan County. They are 50 meters long in total and five meters high.