bushman engravings at twyfelfontein, unesco world heritage site, damaraland, kuene region, namibia

africa african ancient animals antelope archeology art bushman carvings crude culture damaraland desert drawing drive dry elephant engraving giraffe heritage history lion mountain namibia natural nature old painting paintings pattern petroglyph pigment prehistoric red rhino rock safari sandstone self stone texture travel twyfelfontaine twyfelfontein unesco wildlife