Short answers, pulled from the story.
Bodzia Cemetery is a large medieval chamber burial site in the Kuyavia region of central Poland, approximately 15 km northwest of Włocławek. It was discovered in 2000 during a field survey to chart the route of the A1 motorway.
Andrzej Buko led a team from the Polish Academy of Sciences in excavating the site across two phases, in 2004-2007 and again in 2009. The dig uncovered more than 58 chamber graves, 528 small finds, and 67 coins representing rulers and mints from across medieval Europe and the Near East.
Bodzia Cemetery was used in two phases: from 980 to 1035 AD, and again from the late 11th into the early 13th century. The two phases were separated by roughly 50 years.
Stable isotope analysis indicates that most individuals buried at Bodzia Cemetery were not local to the area. Their strontium values match geological substrates found in southern Scandinavia, Ukraine, Hungary, southern and eastern Poland, and other parts of Central and Western Europe. Douglas Price and Karin Frei suggested the vicinity of Kyiv as a plausible point of origin.
Five graves at Bodzia Cemetery contained weapons, including a sword approximately one metre long weighing 855 grams with a silver-inlaid hilt, a battle knife identified by Kara as the only example of its Scandinavian and Baltic type within the Early Piast state, an iron axe, a wooden mace of oak fitted with bronze plaques, and an iron spearhead measuring 8.5 cm.
Bodzia Cemetery shares architectural features with the Jelling complex in Denmark, including large rectangular burial pits and palisade enclosures similar to structures in Zealand and Scania. Both sites show evidence of Scandinavian-origin individuals, developed rapidly over short timeframes, and produced designs that were not immediately imitated elsewhere in the period.