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Cismon Del Grappa

Top 15 Caves around Cismon Del Grappa

Best caves around Cismon Del Grappa are found in a region characterized by its karstic landscape, where the Brenta river carves through valleys at the foot of the Asiago plateau. This area features significant natural cave systems, historical rock formations, and sites adapted for strategic military purposes. The geology of the region has created diverse underground environments, from active karstic springs to ancient dry caves. These natural landmarks offer insights into both geological processes and human history in the Valsugana…

Last updated: June 2, 2026

Grotta dell'acqua nera

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The large entrance hall of this cave conceals a deep, dark mouth, filled by an underground stream that is always well-fed, even in dry periods. This is the entrance—reserved for …

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Campolongo Trenches (WW1)

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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 …

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Bus de la Bela

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In this deep cave, which can be visited in part, remains of Ursus spalaeus (Cave Bear), a large mammal that existed during the middle and late Pleistocene, were found.

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Oliero Caves

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Cave worth seeing with boat trip into the cave.

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Great on warm days.

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Aurora
November 22, 2025, Grotte di Oliero

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 large entrance hall of this cave conceals a deep, dark mouth, filled by an underground stream that is always well-fed, even in dry periods. This is the entrance—reserved for cave divers—to a vast and intricate network of cavities deep within the mountain. The water is actually clear, and it is thought that the name derives from the dark moss-covered floor, over which the stream flows before flowing into the Senaiga. Due to the cave's complex morphology and technical difficulties, exploration began only in the 1970s, and so far, cave divers have discovered a 1,600-meter stretch of siphons and difficult passages. In the 1930s, dye injections proved that this cave communicates with the Castello Tesino Caves, a few kilometers away. Furthermore, an examination of the fine sand found inside, rich in granite crystals, testifies to a significant contribution of water coming from the Cima d'Asta group, much higher and much more distant!

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A. 🐺
November 1, 2024, Bus de la Bela

This large cave has various names: Bus de la Bela, Bus de la Vecia, Bus de la Tosa, Grotta di San Donato, and Grotta dell'Orso. The skeleton of an Ursus Spalaeus (Cave Bear) was found there, a prehistoric animal of imposing size that surpassed that of today's grizzly bear: 3.5 meters (standing) and weighing almost 1 ton. Three explanatory panels at the entrance tell its story. The skeleton is visible free of charge at the Lamon Town Hall. The remains of this mammal have been found in numerous caves across Europe, an environment they used as a dwelling and for hibernation. They often competed with prehistoric humans for ownership of the cave, and one theory suggests they became extinct precisely because of predation by our ancestors. In ancient times, the bones found were attributed to dragons or griffins! Opposite the cave, climbing a short, exposed ramp equipped with a cable leads to a beautiful waterfall. https://it.wikipedia.org/wiki/Ursus_spelaeus

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The skeleton is currently preserved in a glass case visible at the Lamon town hall...👍

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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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In this deep cave, which can be visited in part, remains of Ursus spalaeus (Cave Bear), a large mammal that existed during the middle and late Pleistocene, were found.

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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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Frequently Asked Questions

What are the most notable caves to visit around Cismon del Grappa?

The most prominent caves in the area are the Oliero Caves, a complex of caverns and karstic springs where the Oliero river originates. Another significant site is Bus de la Bela, known for its archaeological findings, including remains of the prehistoric Cave Bear. For those interested in challenging exploration, Grotta dell'acqua nera offers a glimpse into an intricate network of underground passages, primarily for cave divers.

Are there any family-friendly cave experiences near Cismon del Grappa?

Yes, the Oliero Caves are considered family-friendly. Visitors can explore one of the main caves by boat with environmental guides, and the surrounding natural park offers nature trails and picnic spots. The nearby Oliero River area is also a pleasant spot for families, especially on warm days.

What historical sites related to caves can I find in the region?

Beyond natural caves, the area features historical sites adapted from natural formations. Il Covolo di Butistone is an old military fortification built within a natural limestone cave, showcasing how natural geography was used for strategic purposes during World War I. Additionally, the Campolongo Trenches (WW1) include tunnels and shelters dug into the terrain, serving as an extreme bulwark. Near Coli, you can also find ancient rock-cut tombs believed to be from the Lombardic era.

What is the best time of year to visit the caves around Cismon del Grappa?

Spring and summer are generally recommended for visiting the caves, particularly the Oliero Caves, as the surrounding natural park and outdoor areas are more enjoyable. The caves themselves maintain a constant cool temperature (around 12°C inside Oliero Caves) year-round, making them a refreshing escape on warmer days.

Do I need a guide or ticket to visit the caves?

For the Oliero Caves, a ticket is required, and entry is only permitted with a guide. This ensures a safe and informative experience, especially for the boat tour inside the cave. Other sites like Bus de la Bela may have explanatory panels at the entrance for self-guided exploration.

What kind of natural features can I expect to see in the caves?

The caves around Cismon del Grappa are primarily karstic phenomena. At the Oliero Caves, you'll witness active karstic springs where the Oliero River emerges, as well as impressive stalactite formations like the 'sala della colata.' Grotta dell'acqua nera features an underground stream and a vast network of cavities. The region's geology also includes unique rock formations like 'La Gusela,' a towering spire-like structure.

Are there museums or visitor centers associated with the caves?

Yes, within the natural park surrounding the Oliero Caves, you can visit the A. Parolini Museum of Speleology and Karst, which provides deeper insights into the geological processes and exploration of caves. There is also a Paper Mills Museum in the same park.

What outdoor activities can I do near the caves around Cismon del Grappa?

The area around Cismon del Grappa offers various outdoor activities. You can find numerous hiking trails, including routes like the Grappa Nature Loop or the Col dei Prai WWI Trail. For cyclists, there are challenging road cycling routes, such as the climb to Monte Grappa. Running trails are also available, often incorporating historical sites and viewpoints.

What should I wear when visiting the caves?

Given the constant cool temperatures inside the caves (around 12°C in Oliero Caves), it's advisable to wear layers, even on a warm day. Comfortable walking shoes are also recommended, especially if you plan to explore the surrounding natural parks or trails.

Are there any viewpoints near the caves?

Many of the historical and natural sites in the region offer impressive views. The military fortification of Il Covolo di Butistone, built into a cliff face, provides panoramic views of the Brenta river valley. The Campolongo Trenches, though now partially covered by vegetation, were strategically located for their commanding views. The rock-cut tombs near Coli are also situated at a panoramic point overlooking the southern Brenta Canal.

What makes the Oliero Caves unique?

The Oliero Caves are unique as one of Europe's most important karstic spring complexes. They feature four main caves, two of which are active springs forming the Oliero River. Visitors can experience a boat tour through the 'Covolo dei Siori' (Grotta Parolini), marveling at its underground lake and impressive stalactite formations. The constant cool temperature inside and the surrounding natural park with museums add to their distinct appeal.

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