Original: Nabta Playa was once a large basin in the Nubian Desert , located approximately 800 kilometers south of modern day CairoArchaeological Institute of America or about 100 kilometers west of Abu Simbel in southern Egypt , Comparative Archaeology Web 22 ° 32 ' north , 30 ° 42 ' east .
Simplified: It is about 500 miles south of modern day CairoArchaeological Institute of America or about 100 kilometers west of Abu Simbel of southern Egypt , Comparative Archaeology Web 22 ° 32 ' north , 30 ° 42 ' east .