New evidence may resolve a longstanding archaeological puzzle in Peru.
A vast line of thousands of holes dug into a ridge in the foothills of the Andes Mountains served as a regional marketplace for pre-Inca groups more than 600 years ago, researchers report November 10 in Antiquity. Inca rulers later repurposed the 1.5-kilometer-long earthwork, known as the Band of Holes, as a place for receiving and distributing taxes, say archaeologist Jacob Bongers of the University of Sydney and colleagues.
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