Frigido
The Frigido is a short river in Tuscany, central Italy, whose course of 17 km is entirely included in the province of Massa-Carrara. It starts from two branches, one having its source in the Monte Sagro and Monte Rasore (Apuan Alps), the other near the village of Forno. After running into a deep valley in the Apuan Alps, it receives the waters of the Renara and Fosso d'Antona, and then flows in Massa before reaching the Tyrrhenian Sea near Marina di Massa.