America's Stonehenge is an ancient site, a maze of walls, chambers and ceremonial places located in the woods north from Salem – a legendary place. Nobody knows who built that ancient infrastructure.
May be it was built by Native Americans or maybe from early European migrants. America's Stonehenge is over 4000 years old and is the oldest human made structure in North America.
People who build America's Stonehenge had been well versed in astronomy – the whole site is an astronomic calendar, it still shows correct solar and lunar events in the year like sunrise alignment during the solstice. There are also a sacrifice table, but archeologists aren’t sure if humans or animals had been sacrificed.
Main site in America's Stonehenge
Sacrificial Table in America's Stonehenge
Human formed rock used for determinate sunrise alignment
Another look to the Sacrificial Table