Watch HDToday. Double Fence was shot from the balcony of a B&B in Porto Potenza Picena , on the Adriatic coast near Ancona . The work explores the changes that occur with slight shifts in framings of the same scene, and the dramatic alterations in light, colour , space and movement between early morning and late afternoon. The work is the third in a series that records spontaneously occurring moiré patterns and related phenomena. The multifarious birdsong emanates from a nearby animal and bird sanctuary.