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| | | | | Within that remaining cave can be seen rusty red pipes coming out of the wall of the cave and going into the ground. There are about a dozen pipes in the cave, measuring anywhere from four to sixteen inches in diameter.
Locals have known about the pipes for centuries. Dozens of pipe openings have been discovered in the mountains far above the caves.
On the beach of Toson Lake, many more iron pipes run in unlikely patterns and in a variety of diameters, toothpick-sized at the thinnest. More pipes are in the lake, some protruding above the water surface, others buried beneath the lake’s bed. They’re uniform in size and seem to have been created in an intentional pattern. They run in the east-west direction with a diameter between 2 and 4.5 centimeters. They are of various strange shapes and the thinnest is like a toothpick, but not blocked inside after many years of sand movement, shifting that would normally break pipes in the ground.
This is in an area that is completely inhospitable to man – no civilization is ever known to have lived there.
Most of the information you can find online about the Baigong Pipes appears to be originally sourced from a 2002 article from the 'Xinhua News Agency', talking about preparations by a team of scientists about to embark to this remote area to study the pipes. According to Qin Jianwen, head of the publicity department of the Delingha government, scraps of the mysterious pipes were once taken to a local smeltery for analysis.
The result shows that they are made up of 30 per cent ferric oxide with a large amount of silicon dioxide and calcium oxide (which is basically sand or glass). Eight per cent of the content could not be identified. "The large content of silicon dioxide and calcium oxide is a result of long interaction between iron and sandstone, which means the pipes must be very old," said Liu Shaolin, the engineer who did the analysis. "This result has made the site even more mysterious," Qin said. "Nature is harsh here. There are no residents, let alone modern industry in the area, only a few migrating herdsmen to the north of the mountain."
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