Picture shows the archaeological excavation site. [Photo/CNS]

The excavation of Wutulan Tombs conducted by Xinjiang Cultural Relics Bureau ended on September 15, 2014. Multi burial rooms were discovered for the first time.

Wutulan Tombs were discovered in Nileke county in Northwest China's Xinjiang autonomous region. Judging from the excavation, the tombs were built about 4,000 years ago.