Stones for the second Stonehenge, much of which still stands, were brought from up to 175 miles (280 kilometers) away. Construction continued for centuries, and the site may have been a temple for Druid worship, a giant astronomical calendar or a place of healing.
Evidence suggests large crowds gathered at Stonehenge for the summer and winter solstices, a tradition that continues today. Thousands of self-styled Druids, pagans and New Age revelers are due to gather for the winter solstice on Saturday, the shortest day of the year in the northern hemisphere.
Senior curator Sara Lunt said there are still major discoveries to be made — more than half the site remains unexcavated. But the original purpose of Stonehenge may remain a mystery.