Mysterious Giant Circle in the Sahara Desert

[waxzy]

The Richat Structure, a prominent circular feature in the Sahara desert of Mauritania near Ouadane, has attracted attention since the earliest space missions because it forms a conspicuous bull's-eye in the otherwise rather featureless expanse of the desert. It has a diameter of almost 30 miles and has become a landmark for space shuttle crews.

wikipedia entry here

30 miles in diameter...3 concentric circles....

re: Atlantis, Plato says...

Quote:the Island of Atlantis is composed of three concentric circles

Did an ancient war turn Atlantis into a desert?


check out this image from NASA


click here for full size image


random article discussing the phenomenon

regardless of opinions, the image is cool as shit in my books ;p

[B4Time]

This is just me spit balling but it looks like a nuke weapon test that was detonated under ground.hell of a weapon if it was, 30 miles across dam.Any one know how powerful our nukes are today?I lost track when the numbers became insane.

[Easy Skanking]

The Russian Tsar was a 50 Megaton explosion.

Quote:The Tsar drop plane was to be piloted by Major Andrei E. Durnovtsev, who would be made Hero of the Soviet Union following the test. Once there, the bomb would be released at an altitude of 33,600 feet. Barometric sensors inside to bomb were set so that the bomb would explode at an altitude of 13,000 feet. The massive parachute deployed, giving the bomber enough time to reach a safe distance. All crew members put on darkened goggles to protect their eyes from the brilliant flash of light. Six camera crews were assigned to film the explsion, both from the air and from the ground. Major General Nikolai Pavlov, head of the design team and test supervisors, monitored the test 1000 kilometers away at the Olenya base.

One second after detonation, the fireball was over 4 miles wide. Despite the high altitude of the test, the fireball swelled down to the Earth’s surface almost licking the ground. The shockwave of the blast almost killed the crew of the Tu-95 that dropped the plane as the fireball almost reached the height of the release plane. Despite cloudy skies, the flash of light was clearly visible 1,600 miles away. The shockwave destroyed buildings and tore roofs off of homes hundreds of miles from ground zero. Windows in Norway and Finland were shattered. The scientific settelment on the Matochkin Strait called Severney, some 35 miles south of the explosion, was devastated. The thermal pulse of the blast was felt 500 miles from the epicenter. Radio communications were knocked out for an hour and no word of the safety of the Tu-95 and its crew could be reported for some time.

...

Tsar caused massive devastation. Complete destruction extended to a radius of 40 miles surrounding the blast and severe damage as far as 60 miles. Ground zero after the test was described as: "The ground surface of the island has been leveled, swept and licked so that it looks like a skating rink ... The same goes for rocks. The snow has melted and their sides and edges are shiny. There is not a trace of unevenness in the ground.... Everything in this area has been swept clean, scoured, melted and blown away."

http://www.atomicforum.org/russia/tsarbomba.html

[Melchor]

Quote:The Russian Tsar was a 50 Megaton explosion.

Quote:The Tsar drop plane was to be piloted by Major Andrei E. Durnovtsev, who would be made Hero of the Soviet Union following the test. Once there, the bomb would be released at an altitude of 33,600 feet. Barometric sensors inside to bomb were set so that the bomb would explode at an altitude of 13,000 feet. The massive parachute deployed, giving the bomber enough time to reach a safe distance. All crew members put on darkened goggles to protect their eyes from the brilliant flash of light. Six camera crews were assigned to film the explsion, both from the air and from the ground. Major General Nikolai Pavlov, head of the design team and test supervisors, monitored the test 1000 kilometers away at the Olenya base.

One second after detonation, the fireball was over 4 miles wide. Despite the high altitude of the test, the fireball swelled down to the Earth's surface almost licking the ground. The shockwave of the blast almost killed the crew of the Tu-95 that dropped the plane as the fireball almost reached the height of the release plane. Despite cloudy skies, the flash of light was clearly visible 1,600 miles away. The shockwave destroyed buildings and tore roofs off of homes hundreds of miles from ground zero. Windows in Norway and Finland were shattered. The scientific settelment on the Matochkin Strait called Severney, some 35 miles south of the explosion, was devastated. The thermal pulse of the blast was felt 500 miles from the epicenter. Radio communications were knocked out for an hour and no word of the safety of the Tu-95 and its crew could be reported for some time.

...

Tsar caused massive devastation. Complete destruction extended to a radius of 40 miles surrounding the blast and severe damage as far as 60 miles. Ground zero after the test was described as: "The ground surface of the island has been leveled, swept and licked so that it looks like a skating rink ... The same goes for rocks. The snow has melted and their sides and edges are shiny. There is not a trace of unevenness in the ground.... Everything in this area has been swept clean, scoured, melted and blown away."

http://www.atomicforum.org/russia/tsarbomba.html

Here's a Youtube of that bad lad. http://www.youtube.com/watch?v=LxD44HO8dNQ http://www.youtube.com/watch?v=FfoQsZa8F1c

I had to snip this quote because it was too funny.

Quote:RoffaVuurwerk how is it possible that an airplane lifts 125,628,000,000 pounds , its impossible to fly with that weight !!!!

:rofl:

Back on topic, I think the fact that it's in the desert rules out Atlantis, no?

[mastermg]

Well discoveries were found in the Sahara, the desert once was a forest. I dont remember the name of the documentary but some explorers go to some part of the Sahara and find caves with ancient drawings of people swimming in water. Studying the rocks they found it to be true, that part of the sahara used to have a big body of water.

[Melchor]

Well Atlantis is thought to be alternatively: Antarctica, part of South America, in the Caribbean, in the Indian Ocean, in the Mediterranean, in the middle of the Atlantic. I guess we can add the Sahara to the list.

[ToddTraf]

Quote:Well discoveries were found in the Sahara, the desert once was a forest. I dont remember the name of the documentary but some explorers go to some part of the Sahara and find caves with ancient drawings of people swimming in water. Studying the rocks they found it to be true, that part of the sahara used to have a big body of water.

A national geo dinosaur hunter found the green sahara fossil record on accident. Shows two kinds of man from two distinct time periods not only inhabited it but created vast graveyards and encampments. And most survived on fishing. (long term settlements) The dino hunter quickly searched out archeologists and pressed his discovery. National Geo did a cover story on it this year I believe.

[waxzy]

Sahara Desert Was Once Lush and Populated
http://www.livescience.com/history/06072...rains.html

Ancient lakes of the Sahara (The Sahara has not always been the arid, inhospitable place that it is today)
http://www.innovations-report.com/html/rep...port-54055.html

Prehistoric Desert Town Found In Western Sahara (15000 Years Old)
THE LOST City of Atlantis is not deep beneath the ocean -- the ancient metropolis is buried under the sands of the Sahara Desert!
http://www.freerepublic.com/focus/f-news/1195560/posts

[Bobert]

Whoa check this link.:eyebrow:

http://www.saharamet.com/expedition/2003/crater.html

The structures are the Temimichat, Tenoumer and Aouelloul impact craters and a particular circular structure called Richat. A line drawn 208° S-SW between the Temimichat and Tenoumer crater, themselves separated by 166 kilometers, intersects the exact center of the Richat structure, 390 km away.

[yeti]

I love ConCen for just these kinds of threads!

I'm throwing my hat in the impact theory - but you're all quite right about the Sahara being a lot smaller than it used to be in recent geological times...

BTW, do a google on - "aquifer Libya Chad border largest" - it will shed light on why the yanks were so hot on screwing over Libya in the 1980s. He was a "terrist" when Saddam was "our boy"...

[stanteau]

Quote:Well Atlantis is thought to be alternatively: Antarctica, part of South America, in the Caribbean, in the Indian Ocean, in the Mediterranean, in the middle of the Atlantic. I guess we can add the Sahara to the list.

Don't forget symbolic metaphor!

[mexika]

isn't the circle a lake volcano, one of its kind in the world?