The Ditch of Presale  is a small stream that flows in the province of Pesaro and Urbino. it originates from Mount Nerone, best known for its fossils, and flows into the underlying Candigliano River, in the municipality of Piobbico. The central part of the area has been a frequent destination for canyoning practitioners since the sixties. Here you can find an adequately equipped path.
The highest descent is 25 meters, the total descents in the path are 12. In spring it's easy to find small and harmless newts.