Queen quills or pit quills or heart quills or eye -Saharan highlights geological in Mauritania, but in Africa in general and called another name which is a hole exists northern desert of Mauritania near the city condemned the archaeological a diameter of approximately 35 kilometers was first discovered by non- residents local French researcher Theodore Mono in the thirties of the last century, and since then , missions geological coming in on that area and there is scientific debate about what it some scientists say that a hole caused by a meteorite hit the area and some say it is an extinct volcano road. has the Guilayom Mattoon from the University of CBC - Kendabdrasthe within his doctoral thesis , after taking more than 100 rock samples it concluded Dome 've got a great result magma settled 90 million years ago , lifted the rock above, and still rocks motorcycles : Carbonatayt , Cabro and كيمبرلايت on the dyke and Patch witness them .

=