Archaeologists have found the tombs late last year during the excavation of a graveyard covering more than 200, 000 square metres in Quxu County.
Due to centuries of erosion by rain and the impact of human activities, the tombs show signs of damage to various degrees, according to archaeologists.
When excavating two of the tombs, archeologists found pieces of human bone and ceramic relics, which radiocarbon tests showed were 1, 180 to 1, 286 years old.
"As the excavation continues, it will shed more light on how tombs were built in ancient times as well as the broader cultural landscape in the region, " Tashi said.
Source: Times of India