00:04A cave exploration team has discovered a giant karst sinkhole in Liyak County,
00:09South China's Guangxi Zhuang Autonomous Region, bringing Liyak's number of such sinkholes to 30.
00:15The sinkhole, located near Ping'e village under Luoxi Township, measures 306 meters in length,
00:22150 meters in width and 192 meters in depth, with its volume exceeding 5 million cubic meters,
00:28and can be categorized as a large sinkhole. Giant sinkholes, also known as Tiongkeng in Chinese,
00:35are dolines, or giant pits, with special geological features found in karst regions formed by repeated
00:41cave-ins. They are mainly found in China, Mexico and Papua New Guinea. The expedition was completed
00:48on Friday, after the team members abseiled down more than 100 meters and trekked several hours to
00:53reach the pit's bottom. They returned to the ground safely on Friday evening. Zhang Yuanhai,
00:59a senior engineer with the Institute of Karst Geology of China Geological Survey,
01:04said that there are three big caves in the wall, which are presumed to be the remains of the early
01:08evolution of the sinkhole. The bottom of the sinkhole has a well-preserved primitive forest.
01:14This is a small part of the coast area, but in this area, Lake County, there is one of the
01:19caves.
01:20Twenty years ago, the biggest group of the Tiongkeng have been discovered in the world,
01:28and this is the new one. This is the new one. In the past six or seven years, I have
01:34a friend,
01:34Mr Wu, he has the ability to realize the Tiongkeng by satellite image, so this is one of his discoveries.
01:44And then, so a week ago, I've been here to confirm it's a great journey. So today, I organized a
01:51group
01:51here, and we go downstairs to discover if there is a big cave and ground, if there's a river,
01:59or new plants, or new animals.
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