The magnificent ancient city of pyramids at Caral in Peru hit the headlines in 2001. The site is a thousand years older than the earliest known civilisation in the Americas and, at 2,627 BC, is as old as the pyramids of Egypt. Many now believe it is the fabled missing link of archaeology - a 'mother city'. If so, then these extraordinary findings could finally answer one of the great questions of archaeology: why did humans become civilised?
This 2002 BBC Horizon documentary introduces Caral, and explores what had been learned since its first discovery in 1948.
GeoHacker - Caral (links to maps and satellite photos of the site, including Google Earth)