Stonehenge Sunrise

What an awesome anomaly Stonehenge is.
How did ancient people have the knowledge to build stonehenge,
and even more intriguing is how did they know that this static computer
only works in the exact location it is in?
There are many stellar correlations as well as the sun and moon alignments.
These would only all work in conjuction at Stonehenge's precise location!

This was ancient knowledge, evidence suggests that people understood
the workings of the heavens, and our relationship to it,
long before this great temple was built.

Primitive stone age people?
Perhaps not.