The Acquafraggia waterfall drops in a series of cascades down the rocky face of the hillside above Piuro, a couple of kilometres from Chiavenna. It is one of the more dramatic waterfalls in the Italian Alps — not the tallest, but impressive for its width and the violence of the water in spring when the snow is melting. A path from the road leads to the base of the falls in about twenty minutes.
The village of Piuro above the waterfall was entirely buried by a landslide in 1618 — a catastrophic event that killed some 2,000 people and obliterated a prosperous community almost without trace. The local museum in Chiavenna tells the story, and faint remains of the village can occasionally be seen when drought lowers the water table.