Cyclist Andy Buchan has discovered a number of ‘crop circles’ on the mudflats in Exmouth.

The patterns, a circle within another circle, were found located on the River Exe mudflats near to Lympstone.

At first, Andy, of Cutters Wharf, Shelly Road, Exmouth, thought the unusual patterns were a sign from aliens, but later decided they could be a marine’s physical instruction training area.

What do you think? If you have information or have witnessed similar mysterious patterns, email phil.griffin@archant.co.uk