Scientists Dug A 12-Km Hole Inside The Surface Of Earth And This Is What They Found

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We have explored so much outside the Earth. We can predict the distant moons and stars, but how much do we know about our own planet?

Not much, perhaps. Scientists haven’t discovered more than 5% of the oceans and we don’t know what lies underneath the surface we walk on.




Some efforts to figure out what is beneath us have been taken and we are here with the results. Scientists decided to dig a hole about 15,000 meters below the surface of the earth but they couldn’t get past 12,262 meters due to something known as the ‘Door to Hell’.


Want to know what is the Door to Hell? Keep reading.



Major part of the earth is an unexplored territory.

Major part of the earth is an unexplored territory. 

Even though oceans cover nearly 70% of the earth, we have only managed to discover 5% of what they all contain.

Much is to be known…

Much is to be known...

Not just the oceans, when it comes to land only less than 10% of space has been explored by man.





Efforts to look beneath the surface.

Efforts to look beneath the surface. 

Scientists decided to dig a hole 15,000 meters below the surface level. But they could dig only till 12,262 meters.

This is the Kola Superdeep Borehole.

This is the Kola Superdeep Borehole. 

It is the deepest artificially created borehole of the world. The borehole crosses the deepest point in the oceans which is 12-kilometre deep.

They had to stop the drilling.

They had to stop the drilling. 

Scientists wanted to dig down till 5,000 meters, but couldn’t dig further because of high temperatures. They had assumed the temperature would be nearly 100 degrees celsius, but the temperature at 12,262 was 180 degrees celsius. This is what they called Door to Hell.

The drilling, which began in 1972 had to be stopped in 1992.

The drilling, which began in 1972 had to be stopped in 1992. 

For nearly two decades, it was known as the deepest borehole in the world. In  2008, the Al Shaheen oil well in Qatar dug 12,289 meters below sea level. Next came the Sakhalin-I Odoptu OP-11 well which was dug at 12,345 meters in 2011. This is located off the Russian shore.

There have been a lot of discoveries.

There have been a lot of discoveries. 

Ever since scientists started digging the Kola Superdeep Borehole, many things have been found. For instance, some rocks were found to be as old as 2.5 billion years.

Gases were found as well.

Gases were found as well. 

Along with natural gas, other gases like helium, hydrogen, nitrogen, and even carbon dioxide was found beneath the surface of the earth. The carbon dioxide emanated from microbes and organisms living under the surface of the earth.

Surprisingly, no basalt was there.

Surprisingly, no basalt was there. 

At 9,000 metres, scientists found granite which would make it obvious for basalt to be there. But surprisingly, there was no basalt.

One more discovery was made.

One more discovery was made. 




Until the borehole was dug, scientists used to believe that the distance from the surface to the centre of the earth was nearly 6,400 kilometers. But with this, they found out that they’re nowhere close to it.

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