Among the personal effects found at the cemetery, the archaeologists found glass beads, temple rings and scissors.
They also recovered a bronze bowl and the remnants of a wooden bucket with metal clasps.
Dr Kordala said: “The equipment of the graves, that we have found so far, indicates the cemetery functioned from the end of the 11th century, through the 12th century and into the 13th century.”
The cemetary was placed more than 430 yards (400m) from Wzgórze Tumskie – the historical point from which Płock was estabilished.
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