Historians believe that people began to build Stonehenge between 3000 and 2000 B.C. Some radiocarbon dating indicates that the first stones went up between 2400 and 2200 B.C., but another theory claims that it began as a grave site for the region's elite around 3000 B.C.
Because the people who constructed Stonehenge were not literate, no written records exist from the time of its creation to indicate why or when they built the monument. The stones themselves are much older than the structure, so dating them does not date the site. Scientists have found some indirect methods to determine the structure's age. One team dated organic matter from the sockets of the original bluestones. This process indicated that the original structure went back to around 2300 B.C. Another team dated human remains from the site and came up with an earlier date of 3000 B.C.