Sometime back in 1998, while excavating a three-hundred-kilometer site located southwest of the Russian capital, scientists discovered a stone that contained an iron bolt.
Such a find can be attributed to those "inappropriate" artifacts that researchers come across from time to time. They are called so because they are far ahead of the level of technology development of the time in which they were created.
These artifacts often force researchers to reconsider the opinion of the history of civilizations. It is noteworthy that only a small part of them become exhibits in museums, and practically nothing is said about them in history textbooks. Although it is also impossible not to notice these objects. The discovery made by scientists is just one of such artifacts.
However, careful analysis has shown that the bolt actually hit the stone before its formation, that is, 300 million years ago. The mysterious object has a head with a rod, about a centimeter long and about three millimeters wide.
It is worth noting that the research of the artifact was carried out not by amateurs-enthusiasts, but by leading specialists of well-known scientific institutions, as well as independent international experts from various fields of knowledge. Researchers have put forward many theories regarding the origin of the mysterious object, but none of them were considered convincing enough. Therefore, the question of the origin of the artifact is still open.