Crop Circle found in farmers field at Dorset

On May 2015, a man living in the county of Dorset (South West England) has discovered an unusual crop circle in a field. Has it been made by a UFO? What do you thing?

Scott C. Waring explains:

This crop circle found this week in England almost resembles the old Norse art for the Viking era. The farmer has requested that people not come to visit and that understandable. If this was made by a UFO or if it was man made, the farmer doesn't care. He lost some of his crop and thats never good. It would be nice to have some Geiger counter readings from the field or magnetic field reading. SCW