At the start of the Verde river valley, you come across Casa Corvi. Towards Cervara, just after Borgallo, you find a crossroads that leads to Grondola. You walk along this road, cross a small bridge, and on the left you see a vast and ancient oak tree, an unparalleled work of nature. You will also find Farfarà, an old set of farmhouses close to the Pisciarotta waterfall, which drops by about 40 metres and is commonly known as tomba (tomb).
Along the road that connects Pontremoli to Zeri, turn off at the junction in the direction of Valunga. You will see signs for the Stretti di Giaredo, an extraordinary kilometre-long canyon along the River Gordana. You need to walk along the riverbed for about 500 metres, against the current, if you want to explore its extraordinary meanders up close.