human
Stonehenge may then I think be regarded as a monument of the Bronze Age, though apparently it was not all erected at one time, the inner circle of small unwrought blue stones being probably older than the rest; as regards Abury, since the stones are all in their natural condition, while those of Stonehenge are roughly hewn, it seems reasonable to conclude that Abury is the older of the two, and belongs either to the close of the Stone Age, or to the commencement of that of Bronze.
gpt
This is the view of Jacob Grimm, and it is endorsed by W. K. Kelly. Another writer thinks that