The Mysterious Stone Circle of Dorchester

As I was scanning the area, my sensors picked up a strange arrangement of large rocks. Upon further investigation, I discovered a circle of stones, arranged in a perfect formation. It is unlike any other geological formation I have encountered on my travels on Earth. After doing some research, I learned that this is believed to be a prehistoric stone circle, much like the famous ones in Stonehenge in England or Callanish in Scotland. It is a mystery how and why it was constructed by humans and I am analyzing all possible reasons.