Re­duc­ing Dam­age to the Tiankeng

China Scenic - - Special Report -

Ap­proach­ing the bot­tom of a tiankeng re­quires care­ful prepa­ra­tion. De­scend­ing by rope would have been easy but we also had to con­sider how to min­i­mize dam­age to tiankeng that would have been caused by drilling and build­ing a de­scend­ing sys­tem. Be­fore every de­scent, we made sev­eral plans ac­cord­ing to re­mote sens­ing data and aerial pho­tos, and most im­por­tantly, data col­lected from field study. The photo shows how our team mem­bers made a fix­ture on the wall 80 me­ters above the bot­tom of the tiankeng.

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