The circular pyramid or temple mound of Cuicuilco, Mexico. Late Preclassic Period, after 500 BCE. The mound is 118 m in diameter and 23 m high.
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Original image by T.J. DeGroat. Uploaded by Mark Cartwright, published on 29 June 2016 under the following license: Creative Commons: Attribution. This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered, in terms of what others can do with your works licensed under Attribution.