A 30,000-year-old woman’s DNA reveals east-west mixing in Ice Age Europe
A woman who lived about 30,000 years ago in southwestern France has given scientists the oldest genome-wide data yet from a modern human in that part of Europe. Her DNA suggests that Ice Age groups were far less isolated than researchers once thought. Most of her ancestry traced back to western Europe, yet a share of it came from central and eastern Europe, which points to people mixing across long distances roughly 32,000 years ago.
Who was the woman from Isturitz Cave?
Her remains come from Isturitz Cave in southwestern France, a site long linked with the Gravettian culture. The Gravettian spread across Europe from roughly 34,000 to 25,000 years ago. Earlier work had shown that Gravettian-era people in the west and the east carried different ancestry, which led some researchers to picture two largely separate worlds.
An international team led by the University of Vienna set out to test that picture. Pere Gelabert is the lead author and Ron Pinhasi is the senior author, and they published the work in Science Advances in October 2026. A preprint of the study dates the Isturitz woman to between about 30,850 and 29,970 years ago.
What her genome shows
The researchers recovered genome-wide data from the woman, and the University of Vienna describes it as the oldest such dataset from a modern human in southwestern Europe. Most of her ancestry matched the western European lineage that already lived in the region. A smaller part linked her to central and eastern European populations.
Genetic modelling dates that east-west gene flow to about 32,500 to 31,500 years ago. The team saw a similar signal in a person from Ormesson in France, who had been studied before. The preprint describes the eastern contribution as closest to a lineage known from Sungir in Russia. Neither the press release nor the sources we could read give exact percentages for the woman’s mixed ancestry.
“Our results show that eastern and western European populations were not as genetically isolated as previously assumed,” Gelabert said.
DNA from a cave floor with no bones
The team also pulled human nuclear DNA straight out of sediment in El Mirón Cave in Cantabria, Spain. The layer is about 22,000 years old and held no bones or teeth. That matters because many Ice Age sites lack skeletal remains, and this method can still reveal who lived there.
“Sedimentary DNA allows us to recover genetic information from periods where human remains are missing,” Pinhasi said. “This gives us a way to connect archaeological layers with the genetic ancestry of the people who occupied a site.” The El Mirón signal fits western European ancestry persisting into the Last Glacial Maximum, when the Iberian Peninsula served as an Ice Age refuge. A tooth from Chufín Cave in northern Spain adds to the picture of western ancestry lasting for thousands of years.
A family in southern Italy
The study also analysed Ostuni1b, a male fetus from southern Italy who is probably the son of a woman called Ostuni1. His parents were not closely related. The authors read this as a hint about mating practices among Gravettian groups, though the release words it cautiously as “suggesting” rather than confirming anything.
Why it matters, and what remains unclear
Together with archaeological finds, the results suggest Isturitz may have been a meeting place where different groups crossed paths. If so, ideas, tools and genes could have travelled across the continent for thousands of years before the cold peak of the Ice Age.
Several caveats apply. The gene flow comes from modelling, not direct observation. The preprint notes that current data cannot tell whether the eastern signal came from a Sungir-related migration or from an older ancestry component that later faded. The El Mirón data have low coverage, so they do not support firm conclusions about local population structure. Some statistical links may also reflect differences in how the data were produced.
Even with those limits, one woman from a French cave now carries a clear message: Ice Age Europe was more connected than it looked.