A new analysis of over 300 sets of 5,000-year-old bone remains excavated in a Spanish site suggests that many individuals may have been victims of the earliest period of warfare in Europe, occurring over 1,000 years before the first known larger-scale conflict in the region.
The study, published in Scientific Reports, indicates that both the number of wounded individuals and the disproportionately high percentage of affected males suggest that the injuries resulted from a period of conflict, possibly lasting at least several months.
Conflicts during the European Neolithic period (approximately 9,000 to 4,000 years ago) remain poorly understood. Previous research suggested that conflicts involved short raids lasting no more than a few days, with small groups of up to 20-30 individuals. It was assumed that primitive societies lacked the logistical capacity for longer and larger-scale conflicts.
It was previously believed that the first conflict of this kind in Europe took place during the Bronze Age (approximately 4,000 to 2,800 years ago).
Teresa Fernández-Crespo and her colleagues reexamined the bone remains of 338 individuals for healed and unhealed injuries. All remains came from a single collective burial in a shallow cave in Rioja Alavesa, northern Spain, radiocarbon-dated to between 5,400 and 5,000 years ago.
In the same site, 52 flint arrowheads had been discovered, and previous research indicated that 36 of them showed minor damages associated with impact. The authors found that 23.1% of individuals had skeletal injuries, and 10.1% had unhealed wounds, substantially higher than injury rates estimated for the time (7-17% and 2-5%, respectively).
They also discovered that 74.1% of unhealed injuries and 70.0% of healed injuries occurred in adolescent or adult males, a significantly higher rate than in females, and a difference not observed in other Neolithic mass mortality sites in Europe.
The overall injury rate, the highest injury rate among males, and the previously observed damages on arrowheads suggest that many individuals in the burial were exposed to violence and may have been victims of conflicts.
According to the authors, the relatively high rate of healed wounds suggests that the conflict extended over several months. The reasons for the conflict are unclear, but the authors speculate about various possible causes, including tension between different cultural groups in the region during the Late Neolithic.
Sources
Nature Publishing Group | Fernández-Crespo, T., Ordoño, J., Etxeberria, F. et al. Large-scale violence in Late Neolithic Western Europe based on expanded skeletal evidence from San Juan ante Portam Latinam. Sci Rep 13, 17103 (2023). doi.org/10.1038/s41598-023-43026-9
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