Erland Jensen

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Four sun stones and one shale plate, with indented or incised patterns from Vasagård and Rispebjerg sites on Bornholm, Denmark, are here deciphered. Vasagård site was excavated a number of times. From Vasagård Udgravningen AU in 2017, many so-called sunstones of shale and sandstone and some clay disks with eyeholes, some copper, burned flint axes, flint chisels, arrows, clay pots, food, and other artifacts were found in South facing circular timber post holes and causewayed ditches. The oldest sunstones are dated from 2900 to 2800 BCE, a relatively short period, where Vasagård was surrounded by palisade enclosures and where circular timber constructions were erected. Circular timber constructions were also found at Rispebjerg and Nørre Grødbygård, probably spanning from 2900 to 2700 BCE. Here it is shown that deciphering revealed the incised patterns could represent a lunisolar calendar and registration of Venus, Moon and Mercury orbits.