Riserva naturale dell'Orrido di Chianocco, Regional nature reserve in Chianocco, Italy

The Riserva naturale dell'Orrido di Chianocco is a protected nature reserve centered on a deep gorge where a mountain stream has carved through limestone cliffs. The landscape includes riverside areas, rocky slopes, and woodland sections that support diverse plant and animal communities.

The reserve was established in 1980 and is managed by the Ente di gestione delle aree protette delle Alpi Cozie. It forms part of the SIC Oasi xerotermiche della Val di Susa - Orrido di Chianocco e Foresto (code IT1110030). Throughout the 20th century, the Rio Prebech caused severe flooding in Chianocco, prompting hydraulic and forest improvement works in its basin.

The reserve takes its name from the Orrido, the gorge cut by the Rio Prebech. On Palm Sunday, the evergreen fronds of the holm oaks were used by the people of Chianocco in place of the traditional olive branches during the religious service.

The reserve can be explored using marked walking trails that connect different viewpoints and natural features throughout the area. Sturdy footwear is essential due to the steep terrain and rocks, particularly after rain.

The reserve is home to the only confirmed wild holm oak population in the Piedmont region, a species normally found in warmer climates. These trees survive here thanks to a sheltered microclimate created by the deep gorge.