"It's like a city frozen in time," said archaeologist Pedro Guillermo Ramón Celis of Canada's McGill University.
Guiengola is estimated to span 360 hectares of land and is said to have contained more than 1,100 buildings, temples, and ...
The mural was seen as so revolutionary that it was covered by a false wall only to be rediscovered and exhumed in 1973.
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