Some refer to it as the "Door to Hell." The Kola Superdeep Borehole is the deepest artificial point on our globe, measuring 12,262 metres. Nobody could have predicted these revelations. Some people claim that the human race understands more about faraway galaxies and extraterrestrial planets located light years away from Earth than it does about what is underneath our planet's surface.
Surprisingly, it took about 26 years for the Voyager 1 spacecraft to leave our solar system, which is roughly the same length of time it took scientists on Earth to burrow 12 kilometres below our planet's surface. Scientists developed the Kola Superdeep Borehole with a drill depth of more than 7.5 miles after more than two decades of work (12 kilometers).
In 1989, the Kola Superdeep Borehole reached a depth of 12,262 metres (40,230 feet), making it the deepest artificial point on the world. To put that into perspective, the Kola Superdeep Borehole falls roughly 6.8 miles deeper than the ocean's deepest point (11 kilometers).
So, what did the scientists discover down there? After 26 years of intensive drilling, experts discovered that there is A LOT of water down there. Hot mineralized water was detected practically everywhere throughout the drilling path, according to scientists. Not only is there water down there, but scientists have discovered gas. No, not that kind of gas.
All down the borehole, scientists discovered helium, hydrogen, nitrogen, and even carbon dioxide (from bacteria). One of the most surprising discoveries was that there is no basalt beneath the continent's granite. Scientists expected granite to give way to basalt at 9,000 metres. But, to their surprise, it does not.
Furthermore, scientists discovered FOSSILS in granite approximately 6,700 metres below the surface.
In addition to the above, scientists found that the temperature at the bottom of the hole reached a staggering 180 degrees Celsius, officially too hot to continue, and rightfully earning the nickname ‘Door to Hell’.
But perhaps what’s even more impressive is the fact that scientists estimate that the distance to the centre of our planet is nearly 4,000 miles (6,400 kilometres).
Turns out, 6,500 kilometres isn’t anywhere close and what scientists managed to drill trough barely scratches the surface.
“By far the most riveting discovery from the project, however, was the detection of microscopic plankton fossils in rocks over 2 billion years old, found four miles beneath the surface,” reports Bryan Nelson from Mother Nature Network. “These ‘microfossils’ represented about 24 ancient species, and were encased in organic compounds which somehow survived the extreme pressures and temperatures that exist so far beneath the Earth.”
The project was officially terminated in 2005, leaving only a rusted metal cap as a marker of its existence.
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