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For years. the landscape here is an example of karst topography. that means sinkholes, caves and underground streams are common. experts believe the sinkhole was formed by water flowing into the underground rivers from a high altitude, which caused cracks in the landscape that stretched across 37km. this slowly eroded the limestone rock, and so, xiaozhai tiankeng gradually developed. in 1994, the team led by experts andy eavis and zhu xuewen started exploring the sinkhole

Mysteries for years. the landscape here is an example of karst topography. that means sinkholes, caves, and underground streams are common. experts believe the sinkhole was formed by water flowing into the underground rivers from a high altitude, which caused cracks in the landscape that stretched across 37km. this slowly eroded the limestone rock, and so, xiaozhai tiankeng gradually developed. in1991t, the team led by experts andy eavis and zhu xuewen started exploring the sinkhole and its many caverns. what the himalayas are to climbers, china

The landscape here is an example of karst topography. that means sinkholes, caves, and underground streams are common. experts believe the sinkhole was formed by water flowing into the underground rivers from a high altitude, which caused cracks in the landscape that stretched across 37km. this slowly eroded the limestone rock, and so, xiaozhai tiankeng gradually developed. in 1994, the team led by experts andy eavis and zhu xuewen started exploring the sinkhole and its many caverns. what the himalayas are to climbers, china is to cavers and speleologists.

The landscape here is an example of karst topography. that means sinkholes, caves, and underground streams are common. experts believe the sinkhole was formed by water flowing into the underground rivers from a high altitude, which caused cracks in the landscape that stretched across 37km. this slowly eroded the limestone rock, and so, tiankeng gradually developed. in 1994, the team, led by experts andy eavis and zhu xuewen, started exploring the sinkhole and its many caverns. what the himalayas are to climbers, china

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