In August 2017, an article about a very unusual discovery was published in the English-language newspaper Siberian Times. This discovery was made by archaeologist and Doctor of Historical Sciences Andrei Borodovsky, who specializes in the ancient cultures of Western Siberia.
What he discovered cannot be seen with your eyes, because the remains of this structure are now completely hidden underground. However, about 3 thousand years ago, in the valley of the Katun River in the middle of Altai, there was a powerful wall of thick stone blocks.
Now only a few rows of this wall remain underground, an impressive 10 meters wide and 8 meters high. And all this is located on a small stretch of one kilometer long. It is not known who built this structure and for what purpose.
Perhaps the walls were built to control the transition from the steppes to the mountains of people from ancient Altai civilizations, for example, the Pazyryk culture.
The article reports that the ground remains of these walls were destroyed relatively recently, in the Stalin era, when prison labor was actively used in these places to build roads. Other sections of the walls were dismantled during the construction of the local settlement of Souzga.
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Nevertheless, these stones hidden in the ground can be detected using geophysical scanning and these are precisely man-made structures, and not natural rocks.
According to the article, in 2018 Borodovsky intended to conduct more detailed studies in these places. The locals knew about these walls, but believed that they were erected during the Middle Ages. However, Borodovsky is sure that the walls were built much earlier.
Hadrian's wall.
However, according to Borodovsky, in the Middle Ages, local residents did not have any need for such walls. There were only tiny scattered settlements that could not build something like that.
Serpent's shafts.