Parco della Sponga, Natural park in Canistro, Italy.

Parco della Sponga is a municipal nature park on the western slope of the Roveto valley in the Simbruini mountains, in the comune of Canistro. It lies at about 800 m between Canistro Inferiore and Canistro Superiore, in a broad mountain hollow with two small lakes fed by the La Sponga stream, whose Sant'Antonio-Sponga spring rises at about 1000 m. The upper lake drains into the lower one through a small brook, and the stream crosses beech, chestnut, hornbeam, oak and manna ash woods before joining the Liri.

The park was equipped from the 1960s and officially inaugurated in 1993. The mountainous area near the border between the Kingdom of Naples and the Papal States was used as a hideout by brigands, especially in the 16th century. The band leader Marco Sciarra, from Abruzzo, is said to have drawn a map of the area.

A water trail established in 2010 teaches visitors about natural cycles through hands-on learning experiences in the landscape. Local schools use the paths to show students how ecosystems and water flow work together.

The park sits at about 800 meters elevation and requires some hiking experience, especially during wet weather when the paths become slippery. The best time to visit is during months with stable weather when trails are dry and safer to walk.

The La Sponga stream vanishes underground beneath rocky cliffs and reappears elsewhere, a phenomenon that inspired the park's name. The word Sponga means sponge in the local dialect, capturing how water soaks into the mountain like it would through a sponge.