Perched on the edge of the Sahara, this West African city was a center of religion and scholarship for centuries. https://on.natgeo.com/2KFTE49 pic.twitter.com/b0uFHCrqvi

Perched on the edge of the Sahara, this West African city was a center of religion and scholarship for centuries. https://on.natgeo.com/2KFTE49  pic.twitter.com/b0uFHCrqvi

https://twitter.com/NatGeoTravel/status/1028279876439166976