It was built in stages over a period of more than a thousand years, and was finished around 1500BC.
To move one of the stones from the quarry 32km (20 miles) away, it took 10 000 men. Some of the stones weigh as much as 370 people. The holes that were dug for the stones to sit in, were dug with tools made of bone and deer antlers. The soil that came out of these holes were carried away in baskets by women. To shape the rock they used heavy stones. They also used these stones to carve out lumps/holes, so that each of these rocks fit like a glove into each other.
It is thought that it was used for religious ceremonies, but some experts think that the mysterious stone circle was also used as a giant outdoor calendar.
What do you think?