
https://youtu.be/-Fm1oW49uYs
Published on May 11, 2017
With a total length of cave passages reaching a staggering 13,232 m, the deepest explored parts of Krubera-Voronya reach 2,197 m. It remains the only known cave on Earth deeper than 2,000 meters—rightfully earning the title as the entrance to Inner Earth.
Source: ewao.com
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