From Chiusi the route continues towards Valiano, the end point of this section. The stretch is very easy and runs mostly along the “Sentiero della Bonifica”. In this leg of the journey you can admire the beauty of Valdichiana by following the course of the ancient river Clanis, today Canale Maestro della Chiana, which for millennia has influenced the fate of this flourishing and fragile valley. You cross the lakes of Chiusi and Montepulciano (also a Nature Reserve where you can do birdwatching), two relics of the ancient Pliocene lake of the Valdichiana. Here you can enjoy relaxing moments along the way and take advantage of the picnic areas. Shortly after the Lake of Montepulciano, the route leaves the “Sentiero della Bonifica” to head towards Valiano, an ancient castle strategically located on the border between Umbria and Tuscany. After stopping in the village for some sightseeing, it is worth visiting an important and suggestive hydraulic work of the Clanis, known as “Callone di Valiano”. Recently renovated, the structure was built in 1723 to regulate the water level of the lakes of Montepulciano and Chiusi, and ensure the navigability of the Canale Maestro, which for a long time represented the main transport route for agricultural products to Arezzo and Florence.