National Geographic

Deep in the Andes, an archaeologist examining satellite photography discovered 76 unusual stone wall structures. Located in a remote mountain valley in northern Chile’s Camarones River Basin, these long stone walls—some stretching 500 feet (152 meters)—line steep slopes and often meet in a “V” shape. Researchers believe they were used for hunting, reshaping what we know about ancient Andean communities: on.natgeo.com/BRYTC110525

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