Richat Structure
Located on the western edge of the Sahara desert at central Mauritania in northwest Africa, there is a giant circle called Richat Structure, whose diameter ranges as long as 38km. It is made of quartzite.
Located on the western edge of the Sahara desert at central Mauritania in northwest Africa, there is a giant circle called Richat Structure, whose diameter ranges as long as 38km. It is made of quartzite.
