The mountains of garbage that often fill the streets in the Italian city of Naples and surrounding areas aren't just a modern-day problem, suggest ancient wall inscriptions.
Using infrared reflectography, a non-destructive technique commonly used to peek beneath the surface of paintings, Italian researchers have brought to light two inscriptions against garbage dumping in the ancient Roman town Herculaneum.
The modest town was destroyed, along with its more famous neighbor Pompeii, in the first-century eruption of Mount Vesuvius.
They don't provide the text though.