File:SechinBajoPeru.jpg

5,500 year-old ruins discovered near Casma, Peru. The site called Sechin Bajo consists of a plaza and is considered to be the oldest structures ever found in the Americas.

File photo from February 2008.

REUTERS/El Comercio (PERU), Copyright © 2008 Reuters Limited. All rights reserved. Copyright © 2008 Yahoo! Inc. All rights reserved.