For a long time, researchers struggled with the question - why was Stonehenge built. Later, they found out that the building is a kind of ancient calendar, the scheme of which still could not be explained.
In accordance with new research, the stones of Stonehenge, located in three different formations, represented a calendar year. At the same time, 30 sarsens formed a large stone circle and represented the days of the month, and another 5 stones, collected in a trilithon, were additional days, that had to be added to 360 (30 x 12) for the correct counting of days in a year. And four station stones were needed to add one extra leap day every four years, informs ferra.ru.