The girl, identified as Kornelia, had been visiting a plot near Kruszyn when she discovered part of a flint tool dating from thousands of years ago.
The settlement may have belonged to a little-known people who lived on the Baltic coast around 2000 BC.
According to archaeologists at the site in Biskupice, Małopolska, the unusual artefact which measures 10cm across and has clearly defined eyes and a nose with two protrusions that resemble horns could be “connected to religious practices."
The people in the 5,000-year-old grave were captured and executed with blows to the head. Using genome-wide analysis, a reconstruction of the grave shows mainly women and children lying close together with their bodies and limbs overlapping.
Archaeologists from Kraków's Jagiellonian University have discovered a settlement dating back to the Neolithic period in northern Jordan.
The settlement’s founders belonged to a group which inhabited current-day southern Scandinavia, Germany and Poland from 4,300 to 2,800 BC.
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