LIMA, Peru, Dec. 2, 2003
(AP) To the casual observer, they appear to be little more than multicolored tangles of arm-length strings. But a growing number of experts think "quipus" may hold the secrets of the Inca Empire.
The Incas built the greatest pre-Columbian empire in South America, unifying
Andean cultures from what is modern day Colombia to Chile for about a hundred
years before they fell to Spanish conquistadors in the early 1500s.