When you think about the Centovalli, the first thing that comes to mind are the many curves, gorges and bridges over which the historic Centovalli Railway still winds today, connecting Switzerland with Italy. The shimmering green Melezza River flows through the valley and can be seen every now and then. But the Centovalli (including the Terre di Pedemonte) is also an interesting valley for hiker and nature lovers. 141 km hiking trails leads to the farthest corners of these "thousand valleys", which is where the name Centovalli comes from. Trade goods used to be smuggled along many of these routes. The Onsernone Valley was also known for its smuggling routes. The Onsernone Valley is considered the wildest valley in the region and stretches from Auressio to Spruga, with a secondary valley leading to Vergeletto. 300 bends lead to Spruga, the furthest village in the valley. 135 km of hiking trails to get to know this unspoilt valley, which seems to be from another time, and its charm.