A not credible message to a so named crater "Kebira"
 

By wadis formed structure "Kebira"

LARGEST CRATER IN THE GREAT SAHARA DISCOVERED
BY BOSTON UNIVERSITY SCIENTISTS
Researchers from BU’s Center for Remote Sensing locate crater
using detailed satellite data

(Boston, March 3, 2006) – Researchers from Boston University have discovered the remnants of the largest crater of the Great Sahara of North Africa, which may have been formed by a meteorite impact tens of millions of years ago. Dr. Farouk El-Baz made the discovery while studying satellite images of the Western Desert of Egypt with his colleague, Dr. Eman Ghoneim, at BU's Center for Remote Sensing.
The double-ringed crater – which has an outer rim surrounding an inner ring – is approximately 31 kilometers in diameter. Prior to the latest finding, the Sahara's biggest known crater, in Chad, measured just over 12 kilometers. According to El-Baz, the Center's director, the crater’s vast area suggests the location may have been hit by a meteorite the entire size of the famous Meteor (Barringer) Crater in Arizona which is 1.2 kilometers wide.
El-Baz named his find “Kebira,” which means “large” in Arabic and also relates to the crater’s physical location on the northern tip of the Gilf Kebir region in southwestern Egypt. The reason why a crater this big had never been found before is something the scientists are speculating.
Source: http://www.bu.edu/remotesensing/News/kebira/index.html (dead link)

First visits to clarify the origin of "Kebira"

"We continued north in the morning, rounding the western edge of the Gilf, towards a large circular feature that was recently announced to be an 'impact crater' (Kebira Crater) by Faruk el Baz and his team. We drove past the 'central uplift' along it's western edge, then drove into the central part. It is evident, that what is considered the 'central uplift' is in fact nothing more than an eroded outlier of the Gilf, the undisturbed horizontal bedding being clearly visible at all times. The circular shape appears to be pure coincidence, the whole feature is the result of drainage patterns and subsequent eolian erosion, there is nothing to suggest it's impact origin."

Andras Zboray, Hungaria
March 2006

"We were now in the crater area, looking at the western edge of the central uplift area of the "crater". What we saw were uniform horizontal layers of sedimentary rocks, undisturbed except by the processes of natural erosion. The jumbled, chaotic rock formation that we would expect to see in the central uplift area of a crater was not evident at all."

Geoffrey Kolbe, UK
March 2006

Undisturbed stratified Carboniferous strata in the centre of the supposed crater

Location of the photographer

Southeastern side of "Kebira"; in foreground the southern large wadi

Western edge of "Kebira"

     
Unknown visitor in the central part of "Kebira"