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Cavers make rare finds in Southwest China's expedition

By Chen Liang, Zhang Li (chinadaily.com.cn) Updated: 2016-03-10 10:03 Comments

Cavers make rare finds in Southwest China's expedition

An insect inside the caves. [Photo provided to chinadaily.com.cn]

They measured an underground cave tunnel that is said to have been used by military in ancient times.

They found that the tunnel is 1,992 meters long, stretches in a vertical range of 108 meters and recorded the traces of military use that need further research by archeologists.

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