This conclusion can be easily reached if we turn to the so-called "inconvenient artifacts". They are inconvenient only for our orthodox science, which by no means wants to admit that at least several more civilizations existed on Earth before ours (Lemuria, Atlantis, Hyperborea), although perhaps there were much more of them, say, dozens or even hundreds.
Let's start from the most distant point on the timeline of earthly existence. In South Africa, there is a rock near the city of Klerksdorp, in which amazing corrugated balls, disc-shaped and spherical objects, all-metal or hollow, with white blotches or with a light spongy material "sealed" inside, were previously found and are still being found. These artifacts are at least 3 billion years old. Who made them and for what purposes, we will never understand this, especially since, apparently, only this is left of that civilization …
Fast forward billions of years, because, you know, there are almost no traces left of that long time ago. In the first half of the 19th century, in the Dorchester County of the American state of Massachusetts, during the explosive mining of rocks of the Precambrian age (more than half a billion years), two fragments (as it turned out) of a metal vase made of zinc alloy with a large proportion of silver were discovered. And this vase was decorated with decorative elements in the form of flowers and vines, inlaid with silver. Moreover, the quality of workmanship speaks of the highest skill of the manufacturer of this vessel - a representative of civilization, which is 500 million years away from humanity. This is what Scientific American's report was about in June 1841, but for some reason it did not become a turning point in the revision of the history of the Earth.
Move on. Among the "uncomfortable artifacts", two shoe prints stand out: one is a shoe discovered by trilobite collector William Meister in the shale of the American state of Utah (500-600 million years old), and the other is a fashionable sandal discovered by geologist John Reid during a fossil exploration in the state. Nevada (age 250-600 million years).
And how do you like the discovery in the Partizanskaya region of Primorye of a small product made of grains of crystalline moissanite, cemented with a moissanite mass? Today, to obtain crystalline moissanite, the size of no more than a modest piece of jewelry, huge energy and considerable labor resources are spent, which makes this material much more expensive than diamond. To make something more out of this rarest material on Earth - we just don't have such technologies. And hundreds of millions of years ago - someone did it easily.
You can also remember the iron pot (more than 300 million years old), discovered in 1912 by employees of the Thomas power plant in the American state of Oklahoma, the "London hatchet" found by Mrs. Emma Hahn in June 1934 near the American town of London. This product is made of the purest stainless iron using a technology that we do not possess. And he is 150 million years old.
Add to this a 110 million-year-old human palm print (Glen Rose, Texas), and a fossilized human finger (Axel-Heiberg Island in the Canadian Arctic Archipelago), which is at least 100 million years old.
And there are a lot of such "inconvenient artifacts". And they all speak about one thing - humanity is far from an exceptional phenomenon, there were other civilizations before it. How much - we do not know and, apparently, will never know. Were and have sunk into oblivion. We will also leave, perhaps only leaving scant traces, not very "convenient" for the next civilized society. Although, who knows, perhaps it will be much more reasonable than us, and therefore it will neither hide, nor defame, much less destroy the traces left by us?..
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