Chinese and French researchers unveil the newly detected length of Guizhou Shuanghe Cave in Suiyang county, southwest China's Guizhou province. With a detected length of 186.3 kilometers, the Shuanghe River Cave Group is the longest cave in China and the second longest in Asia. According to the researchers, so far they have been conducting cave explorations intermittently since 1987. The detected length increased from 25 km to 186.333 km in 20 years of joint explorations. (Xinhua/He Junyi)
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