OUADANE
Sights & Sites
●Richat Structure – Sahara Desert; 011-20-112-295-7242; nasa.gov/multimedia/imagegallery/image_feature_528.html
; long considered impact structure, now believed by most to be structural dome; sedimentary rock exposed in this dome ranges in age from Late Proterozoic within center to Ordovician sandstone around its edges.
