Researcher holds ancient artifact in a dimly lit cave setting

Ancient DNA Unlocks Mysteries of Prehistoric Cave Artists in Spain and Portugal

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Written by Seth Sebastian

2026-07-01

Deep within the ancient caves of Spain and Portugal, researchers have unearthed a stunning revelation—human DNA preserved in Paleolithic cave paintings. This finding, detailed in Nature Communications, shows that DNA can endure within pigments on rock walls for millennia. It opens a new gateway to unearthing the identities of artists from thousands of years ago.

A team, led by Alba Bossoms Mesa from the Max Planck Institute for Evolutionary Anthropology, conducted the study as part of the First-Art project. This multinational endeavor involves archaeologists, geologists, and cultural heritage specialists from various countries, collaborating to date and analyze prehistoric rock art.

A Window Into the Past

At sites like Maltravieso Cave in Extremadura and the Cave of Altamira in Cantabria, the team analyzed simple marks and hand stencils, discovering traces of human DNA. While limited samples yielded DNA, researchers believe these methods might soon shed light on artists from other remarkable sites, such as Argentina’s Cueva de las Manos, known for its ancient handprints.

Pigmented cave wall sample with red and brown hues from Balmori Cave
Pigmented cave wall sample from Balmori Cave, Spain (© Kevin Nota, courtesy Max Planck Institute for Evolutionary Anthropology)

The Intersection of Art and Science

Science and art have historically been intertwined, whether through the chemistry of pigments or the innovations in ceramics. Monica Green, a specialist in ancient DNA, emphasizes the significance of molecular evidence in understanding historical migrations and pandemics. As she states, data can reveal much from the plaque on teeth to the floor of a cave.

Archivio di Stato di Prato / Italian Ministry of Culture

Delve into photographs capturing memories from the past to modern times, offering a rich visual history.

Multiple handprints on cave wall, resembling ancient art in Argentina
Hands at the Cuevas de las Manos on the Río Pinturas, near the town of Perito Moreno in Santa Cruz Province, Argentina (photo public domain via Wikimedia Commons)

Beyond the Surface

Researchers have long contended that archaeogenetics offers new insights into our ancestors’ lives. Analyses of objects such as the Shroud of Turin illustrate this field’s potential to unveil hidden histories. Although there are limits to what DNA analysis can reveal, artworks are becoming recognized as biological archives that offer more than just visual messages but a direct link to our past.

Artist swabs an old letter for DNA research in historic archive setting
Artist Karina Åberg swabs a 14th-century da Vinci family letter from the State Archive in Prato for biological clues, following research initiated by Rossella Lorenzi. (photo Paolo Agazzi via Archivio di Stato di Prato / Italian Ministry of Culture)

For another adventure into capturing historical narratives through visual mediums, explore this photographer’s life work documenting native peoples across continents.

Sources & Links

Source: hyperallergic.com