WORLD MYSTERIES : 300 million year old iron screw
300 million year old iron screw
In the summer of 1998, Russian scientists who were investigating an area 300 th km southwest of Moscow on the remains of a meteorite, discovered a piece of rock which enclosed an iron screw. Geologists estimate that the age of the rock is 300-320 million years.
At that time there were not only intelligent life forms on earth, not even dinosaurs. The screw which is clearly visible in the head and nut, has a length of about cm and a diameter of about three millimeters.
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