The caves were formed through the combination of natural erosion by the Caglieron stream and man-made excavation of sandstone dating back to the 16th century.
The sandstone extracted from these quarries was historically used to build the cathedral of Vittorio Veneto.
The gorge walls reach heights of up to 40 meters, creating a sheltered, humid environment.
The park contains a specialized micro-ecosystem that supports species of bats which hibernate in the cavities during winter.
The 'Pietra Dolza' (Soft Stone) extracted here is a sedimentary rock that is relatively easy to carve but resistant to weather.
Parco Grotte del Caglieron is a unique geological site located in Fregona, formed by both natural karst processes and centuries of sandstone quarrying. The park features a deep gorge carved by the Caglieron stream, characterized by high, overhanging rock walls and a series of waterfalls. Visitors navigate the area via a system of wooden walkways and bridges that traverse the stream and enter the cavernous spaces. The sandstone excavated here, known as 'Pietra Dolza,' was historically used in the architecture of local towns like Vittorio Veneto. The environment maintains a constant microclimate, making it significantly cooler than the surrounding valley even in summer. The caves are home to specialized fauna, including various species of bats. It functions as a protected natural area managed by local volunteer organizations.
The main wooden bridge spanning the narrowest section of the gorge where the central waterfall creates a dramatic backdrop.
Wear non-slip, closed-toe footwear as the wooden walkways and stone surfaces can be persistently damp and slippery.
Bring a light jacket or windbreaker, as the temperature inside the gorge remains cool year-round regardless of outside weather.
Visit during the shoulder seasons to avoid high foot traffic during the peak summer weekends.
Avoid visiting immediately after heavy rainfall, as the trails may become overly slick or temporarily inaccessible due to high water levels.
Open daily throughout the year, though specific trail sections may close temporarily for maintenance or due to severe weather conditions.
Stay on the designated wooden walkways to protect the fragile moss and geological formations; do not touch the cavern walls.
