Piscia di Gallo, Natural cascade in Parc naturel régional de Corse, France

Piscia di Gallo is a waterfall in the Ospedale massif, in the Oso valley on the commune of San-Gavino-di-Carbini. The Petra Piana stream, joined by the Palavesani stream from the Ospedale dam lake, crosses a rocky chaos for 300 m and then drops 80 m along a rock wall. The water falls over a pale grey face, splits around a dark boulder wedged in the centre, then fans out over reddish-brown rocks in rough steps.

The waterfall lies where the Petra Piana stream, joined by the Palavesani from the Ospedale dam lake, drops 80 metres through a rocky chaos. The name comes from Corsican Piscia di u Ghjàddicu, "fir tree waterfall", not from Piscia di Ghjaddu, "cock's piss", as the IGN map suggests. The lower path was fitted with rock anchors and cables, and a sign marks where the protected zone ends.

The name comes from Corsican Piscia di u Ghjàddicu, "waterfall of the fir", not from Piscia di Ghjaddu ("cock's piss") as the IGN map spelling suggests. The site lies at the edge of the Freto and Alta Rocca, in the Oso valley on the commune of San-Gavino-di-Carbini. As elsewhere in Corsica, the rocks here take strange shapes, some resembling human or animal figures.

Access is by a trail from a car park three kilometres from the Ospedale lake; a few hundred metres along, the path crosses a ford. The upper viewpoints over the fall are waymarked and easy to reach. The descent to the foot is steep but equipped with cables and anchor points in the rock; below the sign marking the end of the protected zone the ground is wet and slippery and visitors are responsible for themselves.

The name is often misread as Corsican "Piscia di Ghjaddu", "cock's piss"; it actually derives from "Piscia di u Ghjàddicu", "fir tree waterfall". The IGN map still carries the misleading form. Near the falls, erosion has left rocks whose shapes locals liken to human or animal figures.