Right in the middle of the Cilento the transparent and fresh water of river Calore gives a hope to the otter, elegant predator in danger of extinction. It is very difficult to observe the queen of the clean waters. The itinerary in the reign of the otter is concentrated on the most fascinating part where the stream is running between Felitto and Magliano Vetere. Here the river Calore has carved its bed between steep rocks and his thunderous roar has created "le marmitte dei giganti", boilers created by water’s whirlpools. We are not only enraptured by nature, but water mills, bridges and medieval villages are one of the highlights of the tours into the Cilento.