The mystery of Stonehenge may finally have been solved.
Latest investigations from researchers say it could be linked to ancient Egypt.
The new theory is that the site was created as an ancient calendar to help people know the time of year.
Researchers think the formation of the stones acted as a physical representation of the year. This allowed people to keep track of days, weeks, and months.
This is a similar system to the solar calendar which was used by the ancient Egyptians and follows the movement of the sun.
Stonehenge is a circle of massive stones, on Salisbury Plain in Wiltshire, in the southwest of England.
It’s thought to have been built in prehistoric times, with the stones being put up in about 2,500 BC.
The research was done by historian Professor Timothy Darvill, from Bournemouth University.