Marc Treanor creates this piece of magical sand art on Mwnt beach, Wales, on the 20th of September, 2014. This work is based on a wonderful crop circle at Walkers Hill, near Alton Barnes, Wiltshire, UK, that was reported on the 4th of August, 2003. Marc's covering text - 'Time lapse and stills of a sand circle to celebrate the imminent Swallow migration and the Autumn equinox. Mwnt Beach, Cardigan, Wales.' Check out the short video: