Feature Archaeology Peru’s Sunny View Solar observatory dates back 2,300 years Share this:FacebookTwitterPocketRedditPrintEmail By Ron Cowen April 30, 2007 at 4:44 pm This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe