Speculation on the reason it was built range from human sacrifice to astronomy.
Stonehenge was used to track the stars and, therefore, could be also identify the time of year it was.
Stonehenge has no official ceremonial use today, other than a tourist attraction.
There are 92 stones at Stonehenge at the present time
A very long time, it was used to design the Pyramids and Stonehenge
It was not used as a barometer.
Pagans.
used for a clock
At Stonehenge human remains were found as well as tools used to help constructing the henge.
limestone
Stonehenge has not been used for thousands of years so no one knows the answer to this.
Exactly where it is now, Stonehenge has not been moved. But for the idea behind its desgn see the link.
The most active phase of Pyramid construction in Egypt was during 2300BC. Stonehenge is believed to date from around 2500BC, making Stonehenge slightly older, although in reality the two monuments date from around about the same time.