Best caves around Campolongo Sul Brenta are found in a region characterized by the Brenta river valley and the Sette Comuni plateau, known for its karst phenomena and historical significance. The area features a mix of natural cave systems and historical war tunnels. These geological formations and historical sites offer insights into both natural processes and past events. The landscape provides varied terrain for exploration, from river valleys to mountain plateaus.
Last updated: June 30, 2026
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A simply wonderful place, easy to reach from the Carpanè-Valstagna station, following a well-marked path along the Brenta River. The staff was equally fantastic, allowing us to follow the cave tour in both Italian and English (part of my group didn't speak Italian). I recommend going in spring; it's cooler and there's usually less traffic, so you can enjoy it all better. ;)
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The Trenchers of Monte Campolongo - not to be confused with the mountain of the same name and its fort exactly on the opposite western side of the Asiago Plateau - are a long and deep Italian trench from the First World War, dug on a promontory which dominates the final stretch of the Val Brenta. It had no active role during the Great War, but served as an extreme bulwark to prevent a possible invasion of the Austro-Hungarian army from Valsugana. Cleaned and recovered, it features walkways, outposts, tunnels and shelters in a dense and silent forest: today the vegetation largely covers the view, especially in summer, but at the time the view of the valley was clean. You can follow the winding of the trench from inside or from above, along a path complete with little bridges... or a little and a little!
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The Oliero caves are a complex of caverns located on the slopes of the Sette Comuni plateau, near the hamlet of Oliero (municipality of Valbrenta). Much of the water that penetrates through the plateau above flows from the caves, a classic example of karst phenomena. There are four caves currently open to the public: Covol dei Veci and Covol dei Siori from which the Oliero river flows; while the two upper ones, Covol dei Assassini and Covol dee Soree, are now dry. To visit the caves it is necessary to have a ticket and entry is allowed only with a guide. In the park of the caves it is also possible to visit the museum of speleology and karst phenomena and relax at the bike grill bar.
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Cave with a considerable development of over 400 meters. At the entrance it immediately divides into two narrow and winding branches: the Ramo dei Ghiri, on the right, and the Ramo dee Strighe, on the left. The tunnels are twisted, very narrow (so much so that the backpack is an impediment to leave at the entrance!), in total darkness, with protruding concretions and narrow passages that at a certain point force you to advance on all fours or to crawl. Entering it is quite impressive: avoid if you are afraid of closed and narrow spaces, complete darkness, bats, cave crickets, spiders (present in the initial meters) and various creatures of the darkness! According to legend, the anguane live near a water source or a stream, inside caves or grottos: hence the toponym 'buso' = hole in Venetian dialect, to be understood as a home or refuge. https://www.ecovicentino.it/esplorare-il-vicentino/la-valle-delle-anguane-e-la-carega-del-diavolo-a-laverda/
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Unique places in the midst of peace
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Impressive as the sound rumbles in the caves, I can hardly believe that the few surviving boys came home completely unnerved, try it. Beware of the few bats, if you see them try not to disturb them
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L'oliero is a show and if you've never been to the caves you don't know what you're missing. Go there
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The region offers a variety of unique cave experiences. You can find tranquility and distinctive formations at Anguane's Cave. For a blend of natural beauty and geological interest, the Oliero Caves are significant for their karst phenomena and underground boat trips. Additionally, the Caverna del Sciason presents a spectacular natural chasm with icy walls and a deep abyss, offering a sense of raw, untamed nature.
Yes, the area is rich in historical sites. The War Caves and Campolongo Trenches (WW1) are significant. These are not traditional natural caves but rather war emplacements and outposts from World War I, offering insights into past events and commanding views. Visitors can explore tunnels where sounds rumble, and bats may be present.
The caves in this region showcase diverse geological features. The Oliero Caves are a prime example of karst phenomena, with water emerging from the Sette Comuni plateau. Inside, you can observe minuscule stalactites and alabastrine flow. The Caverna del Sciason is notable for its gigantic chasm, inverted funnel shape, and walls encrusted with ice, leading to an icy lake almost a hundred meters down.
Yes, several options are family-friendly. The Oliero Caves are considered a wonderful and easily accessible place for families, offering boat trips and a visitor center with educational activities. The area around the Oliero River is also noted as family-friendly and great for warm days.
Visiting in spring is often recommended for the Oliero Caves, as it's cooler and typically less crowded, allowing for a more enjoyable experience. Generally, the spring and summer periods are pleasant for exploring the region's natural attractions, especially for sites like the Oliero River area.
Yes, the Oliero Caves offer a unique experience with boat trips into the caverns. Entry to these caves is allowed only with a guide, and a visitor and educational center at the park entrance provides guided tours and activities. The staff can often accommodate tours in multiple languages, including English.
The Oliero Caves are easily reachable, with a well-marked path along the Brenta River from the Carpanè-Valstagna station. The Caverna del Sciason is also easily reached from Casere Campolongo, which serves as a starting point for various outdoor activities. Specific parking details for all caves may vary, but these two are noted for their relative ease of access.
When visiting caves, it's advisable to wear comfortable shoes with good grip, as surfaces can be uneven or wet. Even on warm days, cave interiors can be cool, so a light jacket or layers are recommended. For sites like the War Caves, a flashlight can be useful for exploring tunnels.
Yes, the region offers numerous hiking opportunities. You can find various mountain hikes around Campolongo Sul Brenta, including routes like the Rifugio Monte Grappa loop or the Croce di San Francesco loop. For more details and specific routes, refer to the Mountain Hikes around Campolongo Sul Brenta guide.
Beyond exploring caves and hiking, the area around Campolongo Sul Brenta is excellent for cycling. There are various cycling routes, including options for touring bicycles and road bikes. You can explore routes like the Rialto Bridge of Valstagna – Brenta Cycle Path loop or the Marostica Castle – Colceresa loop. For more information, check the Cycling around Campolongo Sul Brenta guide and the Road Cycling Routes around Campolongo Sul Brenta guide.
While specific regulations for each cave may vary, generally, natural outdoor areas around the caves are accessible for dogs on a leash. However, for guided tours or enclosed cave systems like the Oliero Caves, it's best to check directly with the visitor center regarding their pet policy before your visit.
The Oliero Caves are significant as the resurgence points for much of the water permeating the Sette Comuni plateau, making them a classic example of karst phenomena. They are also unique for being home to the Proteo, a fascinating amphibian believed to have been introduced from Slovenia, which thrives in this dark, aquatic environment. The boat trip into the caverns adds to their distinctiveness.
Visitors appreciate the tranquility and unique places found in caves like Anguane's Cave. The historical significance and impressive atmosphere of sites like the War Caves, with their rumbling sounds and bat presence, are also highly valued. The natural beauty and the unique experience of an underground boat tour at the Oliero Caves are frequently highlighted as well.


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