image: The fortified stone temple at Chankillo. This image relates to an article that appeared in the March 2, 2007, issue of the journal Science, published by AAAS. The study, by Dr. Ivan Ghezzi and colleagues of Pontificia Universidad Catolica del Peru in Lima, Peru, was titled "Chankillo: A 2300-Year-Old Solar Observatory in Coastal Peru." view more
Credit: Photo provided by National Aerial Service, Peru via <i>Science</i>-AAAS.