HERE ARE SOME 150,000 YEAR OLD pipes, made from materials that can not be identified.
8 percent of the material in the pipes could not be identified. Their mysterious pipes are believed to be around 150,000 years old. According to the largest state-run newspapers in China—People’s Daily reported on a 2007 investigation in which a research fellow from the Chinese Earthquake Administration reported they had found some of the pipes to be highly radioactive.
There, researchers claim to have discovered—in addition to pipes—a pyramidal structure just off the shores of a salt lake. Some of the Baigong pipes are reported to be associated with three caves in Mount Baigong. These caves are reported to occur within the front face of Mount Baigong. The mouths of the two smaller caves have collapsed. Only the largest cave, which is 6 meters (18 feet) high, can be entered. The vague resemblance of the top of Mount Baigong to a pyramid has been the focus of speculation.

Interestingly, two pipe-like structures have been inside the largest cave. One of these is described as being 40 cm (16 in) in diameter. Dozens of upright pipe-like features, about 10 to 40 cm (4 to 16 inches) in diameter, were also found protruding from Mount Baigong above the largest cave.
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