Google Internet maps reveal Roman villa
His curiosity was sparked by unusual shading by his home in Sorbolo, Parma.
He contacted local archaeologists who investigated and confirmed it was once the location of a Roman villa.
"At first I thought it was a stain on the photograph," 47-year-old Mr Mori explained. "But when I zoomed in, I saw that there was something under the earth."
The satellite images threw up a dark oval shape more than 500m (1,640ft) long, as well as shaded rectangular shapes nearby.
Mr Mori decided to alert experts from the National Archaeological Museum in Parma about his find.
After excavating some ceramic pieces from the site - now farmland - they confirmed a Roman villa once stood there.