Staying within the boundaries: Substantial local mobility in mid-3 rd millennium Southern Scandinavia revealed by laser ablation Sr isotope analysis
By applying laser-ablation strontium isotope analysis to 70 Battle Axe Culture skeletons, this study reveals that individuals in mid-3rd millennium Southern Scandinavia primarily engaged in short-distance local mobility rather than the long-range migration traditionally associated with Corded Ware groups, marking a gradual shift from local pastoralism to sedentary agriculture.
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For decades, archaeologists have imagined the people of the Corded Ware Culture, who swept across Northern Europe around 3,000 years before the Common Era, as relentless wanderers. The prevailing story was one of vast migrations, where herders and warriors roamed great distances, constantly on the move across the landscape. This image was built on the assumption that these groups lived a nomadic life, chasing livestock and resources far from home. To test these ideas, scientists have long used a technique that analyzes the chemical fingerprint of teeth. Because the soil and water in different places contain unique traces of a specific element called strontium, the food and drink a person consumes leave a distinct mark on their growing teeth. By measuring these marks, researchers can tell if someone grew up in the same place they were buried or if they traveled from somewhere else. However, traditional methods only provided a single average value for an entire tooth, which could only answer a simple question: was this person a local or a stranger? It could not reveal the details of their daily life or the rhythm of their movements.
A new study from southern Sweden and eastern Denmark has rewritten this story by looking much closer. Instead of taking an average, the researchers used a laser to scrape tiny lines across the surface of teeth from seventy skeletons, creating a detailed timeline of where each person had been during their childhood and adolescence. They focused on the Battle Axe Culture, a regional version of the Corded Ware people who lived in southern Scandinavia between roughly 2600 and 2200 BCE. The results challenge the old picture of constant, long-distance migration. Instead of wandering far and wide, the study suggests that most people in this culture stayed within a relatively small neighborhood, traveling short distances repeatedly throughout their lives. While they were not static, their world was defined by local boundaries rather than endless horizons.
The researchers examined teeth from seventy individuals buried in flat grave cemeteries and ancient stone passage graves across the region. By using a laser to analyze the strontium levels at different points along the tooth's growth, they could see how a person's environment changed over the years. The data showed that for the vast majority of these people, the chemical signature of their teeth remained consistent with the local geology. This indicates that they lived, ate, and drank within the same general area where they were eventually buried. Long-distance travel was the exception, not the rule. Only a few individuals showed signs of having come from much further away, and even those who did were rare. The study found that most movement was confined to short trips, likely covering distances of less than thirty kilometers, which is a journey one could make on foot in a single day.
This pattern of movement suggests a specific way of life that blended farming with herding. The people of the Battle Axe Culture appear to have been semi-sedentary, meaning they had a home base but moved seasonally to manage their livestock and resources within a defined territory. They were not nomads crossing the entire continent, but rather a settled community that practiced a form of local transhumance, moving their herds to different pastures nearby. The study also looked at whether men and women moved differently, a common question in archaeology given the theory that women often married into other families. The data did not show a clear difference in mobility between the sexes, though the sample of adult women was small. One notable exception was an older woman from Vellinge whose teeth told a different story: she spent her childhood in a different region but moved to the local area during her teenage years, a pattern that fits with the idea of a woman moving to her husband's home upon marriage.
The findings also highlight a shift in how these people lived over time. The study compared the Battle Axe Culture with the later Late Neolithic period and found that the earlier group moved more frequently within their local area. As time passed and society transitioned toward a more settled agricultural economy, this local mobility decreased. The researchers also noted that the individuals who showed the most movement, including those who traveled the furthest, were often the ones who had suffered violence or trauma in their lives. This suggests that while most people lived quiet, local lives, a few individuals may have been involved in conflict or raiding, traveling further afield for dangerous purposes. The study concludes that the Battle Axe Culture was not a society of constant, long-range migration, but rather a stable, territorial community that maintained a rhythm of short, regular movements within a familiar landscape.
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