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Dating to as early as 8,200 years ago, the paintings may have maintained collective memories during an extremely dry period in history

New yorkUnited statesCueva huenulBruce bowerRomero villanuevaCueva huenelRamiro barberenaJennifer nalewickiGuadalupe romero villanuevaBecky ferreiraNew york timesUniversity of chileTechnical research councilArgentine national scientificGuadalupe romeroLive science