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Sunday, September 7, 2008 |
Sunday, September 7, 2008 |
Photo: Oldest Observatory in Americas Discovered in PeruStructures at the site, discovered near Lima, Peru, align with the directions of sunrise and sunset at critical points in the agricultural calendar, including December 21, the start of the Southern Hemisphere's growing season, and June 21, the end of harvest. Photograph courtesy Robert Benfer/University of Missouri
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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