Mistero dell’Ombra

While out for a nice walk in our neighborhood, Brack observed a normal shadow (image below left) and a mysterious, LOVEly image (below right). How was the lovely (real, non-Photoshopped) heart shadow created?

Kudos to whoever provides an explanation (submitted via the email button below) and a special prize to anyone who can produce and submit their own lovely shadow image !

Or, you can just check your idea by clicking on the SOLUZIONE button.