Caves around Cassola, a municipality in the province of Vicenza, Italy, offer a blend of natural and historical underground formations. The region is characterized by its position within Veneto, providing access to varied landscapes. While not primarily known for extensive natural cave systems, Cassola features several notable historical sites that incorporate cave-like structures and tunnels. These sites provide insights into the area's past and geological features.
Last updated: June 30, 2026
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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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It's definitely worth having a small flashlight with you ;)
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Here the path goes through a small tunnel in the mountain, from which a passage branches off. We didn't dare to explore it without a flashlight :)
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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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Panoramic point with the monument dedicated to the stonemason (680 m). In this area since the sixteenth century there were quarries from which precious marble was extracted. The nearby forest road allows you to quickly reach a large disused quarry which today has become a climbing wall. Also nearby is the “house of the stonemasons” and a picnic area.
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It can be reached from both sides of the hill, following rather challenging climbs, but it is worth it. The area overflows with history.
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The "caves" around Cassola are primarily historical sites, including World War I trenches, war tunnels, and former quarry sites. These offer insights into the area's past and geological features, rather than extensive natural cave systems.
You can explore sites like Campolongo Trenches (WW1), which features recovered walkways, outposts, tunnels, and shelters from the First World War. Another significant location is War Caves, known for their historical importance and accessible via challenging climbs.
Cassola is not widely recognized for extensive natural cave systems. The primary underground attractions are historical structures like war tunnels and former quarries, which offer a unique blend of history and geology.
Yes, you can visit Priare Caves and Panoramic Viewpoint on the Sentiero delle Gallerie. This site combines historical quarry areas, where marble was extracted since the sixteenth century, with a panoramic viewpoint. There's also a disused quarry now used as a climbing wall nearby.
Many of the sites, particularly the historical trenches and war caves, involve exploration of historical structures. While some paths are recovered, others might involve challenging climbs. For sites like Campolongo Trenches (WW1), the winding paths and tunnels can be an engaging experience, but always check specific site conditions for suitability with younger children.
Given that many sites involve tunnels and potentially challenging terrain, it's advisable to wear sturdy footwear suitable for walking or hiking. For exploring tunnels like the Small Tunnel in the Rock, bringing a flashlight is recommended.
The region around Cassola offers various outdoor activities. You can find numerous routes for mountain biking, cycling, and gravel biking. For example, explore MTB trails like the Ezzelini Trail or Campo Solagna Hut loop, or enjoy cycling routes such as the Brenta Cycle Path. You can find more details on these activities in the MTB Trails around Cassola, Cycling around Cassola, and Gravel biking around Cassola guides.
Many of the historical sites, such as the trenches, offer accessible paths for exploration. The Campolongo Trenches (WW1), for instance, have recovered walkways. However, some war caves may involve more challenging climbs, so it's best to check the specific conditions of each site.
Visitors appreciate the historical depth and the unique experience of exploring World War I trenches and war caves. The sense of history, the impressive structures, and the quiet, dense forests surrounding these sites are often highlighted. The panoramic views from locations like the Priare Caves are also a favorite.
Yes, it is highly recommended to bring a flashlight, especially for exploring smaller tunnels or sections that may be dark. For example, the Small Tunnel in the Rock is noted as needing a flashlight for proper exploration.
While not primarily natural caves, the region's history of marble extraction at sites like the Priare Caves showcases man-made geological alterations. The historical trenches and tunnels themselves represent significant engineering feats within the natural landscape.
The duration of your visit will depend on the specific site. Exploring the Campolongo Trenches (WW1), with its winding paths and various features, can take a couple of hours. Other sites might be quicker to explore, but allow extra time for enjoying the surrounding nature and views.


Extend your search for the best caves by checking out these guides of the top ones around Cassola: