Bronze Age · c. 1000 BC · Turlojiškė, Kalvarija, Marijampolė County, Lithuania
Mass grave of young men points to Bronze Age battle in Lithuania
Radiocarbon dates show at least 11 young men died at about the same time around 3,000 years ago at Turlojiškė, several with injuries consistent with weapons.
Not yet peer reviewed
Turlojiškė, Kalvarija, Lithuania Archaeologists say a peat bog at Turlojiškė in southern Lithuania holds the remains of at least 11 young men who died at roughly the same time in the Late Bronze Age, around 3,000 years ago. Weapon injuries on several skeletons, together with flint arrowheads and bronze and stone axes found in the same layers, lead the team to interpret the site as a mass deposit from a battle. The men's bodies ended up in a shallow lake that later turned into peatland.
The research is led by archaeologist Mantas Daubaras, who resumed work at the site in 2025 with Vilnius University and partners in Poland. The results have not yet been published in a scientific journal. The team says several papers are in preparation.
A site first found by river workers
The bog, in Kalvarija eldership, has produced human remains for almost a century. In 1930 workers straightening the Kirsna River found a human skull along with objects made of bone, antler and flint. More human remains turned up in later decades. Between 1996 and 2003 archaeologist Algimantas Merkevičius led the first systematic excavations. His team documented traces of a settlement that once stood near a former lake and recovered more human bones.
The 2025 team reopened a small area of the bog, collected sediment samples and found the remains of another individual. They went back through archival records and studied bones stored at the Faculty of Medicine of Vilnius University, so that finds made decades apart could be assessed together. A wooden artefact was recovered during the work as well.
Dates, wounds and a vanished lake
Radiocarbon dating was central to the new interpretation. Specialists at the Center for Physical Sciences and Technology dated several sets of human remains using AMS methods. The results show that at least 11 individuals died at roughly the same time during the Late Bronze Age.
Several skeletons carry perimortem injuries, meaning wounds received around the time of death. These include sharp force trauma that the researchers describe as consistent with weapons. The remains belong only to young men, which the team takes as support for a combat-related event rather than a normal burial ground. In their reading, the dates, the pattern of injuries, the age and sex of the dead and the weapons found with them all point to a battlefield-related mass deposition.
Geological work explains the setting. The muddy layer at the bottom of the basin began forming more than 15,000 years ago, soon after the last Ice Age. Sediments gradually filled the lake, and around 3,000 years ago peat started to form as the water became shallow and marshy.
To reconstruct the lake, the researchers drilled 640 boreholes across the bog. The data allowed them to map the former lake bottom and build two-dimensional and three-dimensional models of the basin. Zoologists from the Tadas Ivanauskas Zoological Museum analysed biological remains in the sediment samples, identified mollusc species that lived in the silting lake and reconstructed features of the ancient ecosystem.
Comparable sites include the Tollense Valley in northern Germany, where the remains of a large Bronze Age battle from around 1250 BC have been excavated, and Alken Enge in Denmark, a bog deposit of the remains of many men from the Iron Age, around 2,000 years ago. Sites like these show that organised violence on a large scale took place in parts of prehistoric Europe. Turlojiškė would add evidence of it from the eastern Baltic region.
The researchers plan further fieldwork and laboratory studies in 2026. The papers now in preparation are to present detailed analyses of the bones, the artefacts and the environmental data.
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