No stone left unturned in artist's workshop

Lineri is thinking of returning his collection of stones to the riverbed one day

Luigi Lineri's home workshop is covered in stones - tens of thousands of them. They resemble animal heads, human faces and other forms, and the artist and poet believes may have been shaped by prehistoric humans.

Lineri has built his vast collection over the past 50 years, making his finds along the Adige river, near Verona in northern Italy.