A hole in the desert

Ellip · 08-03-2005, 04:54 PM

And With 30km not a small one.

The Crater isn`t listed in the Crater list.

Anyone an idea ?

Steeefan · 08-03-2005, 05:02 PM

After doing some research using the name to that 'thing' which GE gives us, I found the following.

Quote:

Originally Posted by tranlated from de.wikipedia.org

Guelb er Richat is a circular crater-like geogolical shape at Sahara (Mauritania) It's diameter is 45km, the circlic walls are only a few meters high.

At first it was mistaken for a crater caused by a meteor but research proved that it's a vulcan which isn't erupted.

Info from NASA

Stadsman · 08-03-2005, 05:11 PM

Nice find. My guess is that it's an oasis or underground lake that periodically dries up (Turn on the water layer to see where the water is). It's also very near a Keyhole Community BBS placemarker (turn on that layer to see it), which refers to a UNESCO World Heritage Site, see link.

Viking · 08-04-2005, 01:05 PM

Just spent some time panning in and out over ... whatever that thing is .... it's huge!

Rwootton · 08-04-2005, 03:40 PM

Apparently it is a symmetrical uplift (circular anticline) that has been laid bare by erosion

source:
http://earthobservatory.nasa.gov/Nat...> img_id=2124

Ooops this is nearly identical to Steefans post, sorry

08-04-2005, 01:05 PM	#4
Viking Junior Member Join Date: Jul 2005 Posts: 1	Saharan creater Just spent some time panning in and out over ... whatever that thing is .... it's huge!

08-04-2005, 03:40 PM	#5
Rwootton Member Join Date: Jul 2005 Location: Chicago Posts: 30	Space Shuttle crews know this "bullseye" landmark Apparently it is a symmetrical uplift (circular anticline) that has been laid bare by erosion source: http://earthobservatory.nasa.gov/Nat...> img_id=2124 Ooops this is nearly identical to Steefans post, sorry

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08-03-2005, 05:11 PM	#3
Stadsman Super Muderator Join Date: Jul 2005 Location: 52°21'24.37"N, 4°51'13.83"E Posts: 261	Nice find. My guess is that it's an oasis or underground lake that periodically dries up (Turn on the water layer to see where the water is). It's also very near a Keyhole Community BBS placemarker (turn on that layer to see it), which refers to a UNESCO World Heritage Site, see link.