No stonhenge is not 6,000 years old. You read the article it was froman educationalsite,not a sitelike this.
The only thing close to the megaliths in nabtaare the malta hypogenum,and possibly the megaliths on orkney island.
It does notmatter if stone hengde it 6,000 years old the dat form thsi site proves people migrated from centralafrica 10,000 years ago. cattle situals was used therfore signifying the importance of cattle in the old kingdom and egypt.
It has also been shown domestication ofcattle was indpendent in africa.