The Race to Protect Atacama’s Ancient Geoglyphs

Ancient geoglyphs in Chile's Atacama Desert face threats from vehicles and mining, risking irreversible damage. Learn about the archaeological efforts to protect this historical site.

By María de los Ángeles Orfila
Oct 8, 2024 1:00 PMOct 8, 2024 1:50 PM
Tire tracks driving over Alto Barranco geoglyphs.
(Credit: Atacama Foundation) Tire tracks driving over Alto Barranco geoglyphs.

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On the arid and seemingly sterile surface of the Atacama Desert lies an invaluable treasure of history and culture: thousands of ancient geoglyphs etched on the slopes of the hills, silent witnesses to the caravan routes of pre-Hispanic peoples.

Gonzalo Pimentel, archaeologist and president of the Atacama Foundation, describes them as accurate maps leading to the Pacific Ocean and records of memories, habits, and customs. Colossal human figures, llamas, birds, and enigmatic geometric shapes have reflected the Andean worldview for over 3,000 years. 

However, this invaluable heritage — which has yet to be fully explored — is under constant threat. Among the main culprits are formal and informal rallies, as well as mining activities. The passage of vehicles leaves marks that alter the original designs, rendering them unrecognizable and, in some cases, irreparable. 

Damaged Geoglyphs at Alto Barranco

Pimentel believes this is the case with the geoglyphs at Alto Barranco, which are over a thousand years old and located south of Iquique in the Tarapacá Region, about 1,000 miles from Santiago, Chile. “The lines from the motorcycles look very whitish. That means they’ve already dug deep into the hill,” explained the archaeologist. Researchers have noted that the damage has been progressive since the 1980s.

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