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NASA image reveals remains of an ancient lake that stretched across the Sahara 7,000 years ago

NASA image reveals remains of an ancient lake that stretched 150,000 square miles in the Sahara 7,000 years ago – and today it would have been the largest in the world

  • NASA made an image of the area that was once known as the largest lake in the world
  • Known as ‘Mega Chad’, this more than 7,000 years ago stretched over 150,000 square miles in the Sahara
  • The image marks the dark lower parts of the area, along with sand spits and beach ridges
  • Within the shadow, modern Lake Chad is only 137 square miles in size

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NASA shared a creepy image of what was once a lake larger than the Caspian Sea in central Africa.

Called Mega Chad, this vast body of water stretched over 150,000 square miles across the Sahara and would have been the largest on earth today.

The modern Lake Chad is only a fraction of its former size and is located in the old coastline of the water that is still etched into the desert landscape.

The image highlights the dark lower parts of the area, along with sandy teeth and beach ridges that formed along the northeastern shores of Lake Mega Chad.

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NASA shared a creepy image of what was once a lake larger than the Caspian Sea in central Africa. Called Mega Chad, this huge body of water stretched over 150,000 square miles across the Sahara and would have been the largest on earth today

NASA shared a creepy image of what was once a lake larger than the Caspian Sea in central Africa. Called Mega Chad, this huge body of water stretched over 150,000 square miles across the Sahara and would have been the largest on earth today

Experts have noted that the huge lake took only a few hundred years to shrink to its current 137 square miles.

The lake, which crosses the borders of Chad, Niger, Nigeria and Cameroon, has been further reduced by humanity extracting fresh water from it.

The details of how long it took to shrink were released in 2015 by a team of British scientists.

“A reconstructed history of the lake level for the old Mega-Chad Lake, once the largest lake in Africa, suggests that a humid North African period, with increased rainfall in the Sahara region, ended abruptly about 5,000 years ago and that the Bodélé- The lake basin, now a major source of dust in the air, may have dried out about 1000 years ago, “the team wrote.

The modern Lake Chad is only a fraction of its former size and is located in the old coastline of the water that is still etched into the desert landscape. The image highlights the dark lower parts of the area, along with sand peaks and beach ridges that formed along the northeastern shores of Lake Mega Chad

The modern Lake Chad is only a fraction of its former size and is located in the old coastline of the water that is still etched into the desert landscape. The image highlights the dark lower parts of the area, along with sand peaks and beach ridges that formed along the northeastern shores of Lake Mega Chad

The modern Lake Chad is only a fraction of its former size and is located in the old coastline of the water that is still etched into the desert landscape. The image highlights the dark lower parts of the area, along with sand peaks and beach ridges that formed along the northeastern shores of Lake Mega Chad

But the researchers’ discovery shows that fertilization could only have happened 1000 years ago – leaving behind a mystery about how the jungle received essential nutrients before that time.

The researchers discovered that the change took place in just a few hundred years – much faster than previously thought.

Dust from Bodélé blows across the Atlantic to fertilize the rainforests of the Amazon.

Dr. Simon Armitage from the geography department of Royal Holloway said: “The tropical forest in the Amazon is like a giant hanging basket.

The lake, which crosses the borders of Chad, Niger, Nigeria and Cameroon, has been further reduced by the humanity that brought fresh water out of it.

The lake, which crosses the borders of Chad, Niger, Nigeria and Cameroon, has been further reduced by the humanity that brought fresh water out of it.

The lake, which crosses the borders of Chad, Niger, Nigeria and Cameroon, has been further reduced by humanity extracting fresh water from it.

“In a hanging basket, water quickly washed soluble nutrients from the soil and these need to be replaced with fertilizer to make the plants survive.

‘Similarly, heavy leaching of soluble minerals from the Amazon basin means that an external food source must maintain soil fertility.

“As the most powerful source of dust in the world, Bodélé depression is often cited as a likely source of these nutrients, but our findings indicate that this can only apply to the past 1,000 years.”

To analyze the decline of Mega Chad, researchers from Royal Holloway, Birkbeck and Kings College, University of London used satellite images to map deserted coastlines.

They also analyzed the sediment of the lake to calculate the age of these shorelines, and produced a history of the lake at the level of the last 15,000 years.

The research was published this week in the Proceedings journal of the National Academy of Sciences.

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