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Drone images provide new insights into lost Bolivian civilisation - video
https://www.theguardian.com/world/video/2017/may/12/drone-images-provide-new-insights-into-lost-bolivian-civilisation-video
A collaboration between Unesco and archaeological experts in Bolivia has provided new insights into the ancient Tiwanaku archaeological site in the country, helping to preserve the site that experts say could date as far back as 1500 BCE
Fri 12 May 2017 00.37 EDT
Last modified on Wed 14 Feb 2018 15.42 EST