Alternative historians have suggested the existence of a “pre-catastrophe world” in the Sverdlovsk region, including the Didinsky tunnel, but monitoring of scientific information does not confirm the existence of such a concept. This is likely part of mythology rather than established scientific fact, historians say. An example of such myths are legends about the destruction of Atlantis and other continents. In addition, there are documentary records about the construction of the Didinsky tunnel near Pervouralsk in 1918. According to reliable sources, such as the portal “Our Ural”, which has been publishing historical data for more than 10 years, this tunnel was built at the beginning of the 20th century and was used for strategic purposes during the retreat of Admiral Kolchak to Siberia.

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