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San Nazario

Top 11 Caves around San Nazario

Best caves around San Nazario are primarily found in the Valbrenta area, known for its significant karstic springs and geological formations. The region, situated near the Sette Comuni plateau, features a landscape shaped by water erosion, creating numerous caves and underground rivers. This area offers a range of subterranean experiences, from accessible boat tours through active springs to historical dry caves with archaeological significance. The natural environment provides a setting for exploring both geological wonders and historical sites.

Best caves…

Last updated: June 30, 2026

Anguane's Cave

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Beautiful place and tranquility

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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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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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Ernesto Cave

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Important discovery occurred in 1983 by a boy from the area. Evidence of use of the cave by primitive settlements has been found, with evidence of many finds. The link …

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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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Important discovery occurred in 1983 by a boy from the area. Evidence of use of the cave by primitive settlements has been found, with evidence of many finds. The link below describes the studies carried out by the Tridentine Museum of Natural Sciences https://apsat.mpasol.it/biblio/uploadedfiles/Awsiuk%20R.,%20Bartolomei%20G.,%20Cattani%20L.,%20Cavallo%20C.,%20Dalmeri%20G.,%20d'Errico%20F. ,%20Giacobini%20G.,%20Girod%20A.,%20Hercman%20H.%201994,%20La%20Grotta%20d%E2%80%99Ernesto%20(Trento).pdf

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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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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 accessible caves for visitors around San Nazario?

The Oliero Caves, particularly Grotta Parolini (Covol dei Siori), are highly accessible. Visitors can explore Grotta Parolini via a boat tour on an underground lake, making it suitable for a wide range of visitors. Entry to these caves is typically with a guide.

Are there any caves with historical or archaeological significance in the San Nazario area?

Yes, several caves offer historical insights. Ernesto Cave is known for evidence of primitive settlements and numerous archaeological finds. The Campolongo Trenches (WW1) include caves and tunnels that were part of an Italian trench system from the First World War. Additionally, Covol dei Assassini, part of the Oliero Caves complex, shows signs of human presence dating back to the Stone Age.

What unique natural features can I expect to see in the caves near San Nazario?

The Oliero Caves are renowned for their unique natural features. Inside Grotta Parolini, you can witness impressive stalactites and stalagmites, including the magnificent 14-meter-high alabastrine stalactite waterfall in the 'Sala della Colata'. The underground lake is home to the rare Proteus, a living fossil amphibian. The area is also a significant karstic spring, showcasing the power of water erosion.

Are there family-friendly cave experiences available?

Yes, the Oliero Caves are considered family-friendly. The boat tour through Grotta Parolini offers an engaging experience for all ages, and the surrounding natural park provides picnic areas and a Speleological and Karst Museum, adding to the family appeal.

What is the best time of year to visit the caves around San Nazario?

While the caves maintain a constant temperature year-round (e.g., 12°C in Grotta Parolini), visiting in spring or summer is often recommended. The komoot community suggests visiting the Oliero River, near the Oliero Caves, during warm days, and specifically recommends spring for the Oliero Caves to enjoy cooler temperatures and potentially less traffic.

What outdoor activities can I do near the caves around San Nazario?

The region offers various outdoor activities. You can find numerous hiking trails, such as the Monte Asolone WWI Memorial Trail or the Historic WWI Mule Track to Col Moschin Memorial. For mountain biking enthusiasts, routes like the Casonetti of Marcesina – Valsugana bicycle path loop are available. Mountaineering options, including Via Ferrata Sass Brusai, are also present. You can explore these and more on the Hiking around San Nazario, MTB Trails around San Nazario, and Mountain Hikes around San Nazario guide pages.

Are there any caves suitable for experienced cave divers?

Yes, Covol dei Veci, one of the active springs of the Oliero River within the Oliero Caves complex, is an underwater cave. It is exclusively accessible to experienced cave divers, offering a challenging exploration opportunity into its crystal-clear waters.

What do visitors enjoy most about the caves around San Nazario?

Visitors appreciate the tranquility and unique atmosphere of places like Anguane's Cave. The Oliero Caves are highly praised for their boat trip experience, the stunning geological formations, and the overall natural beauty. The historical significance of sites like the Campolongo Trenches (WW1) also draws considerable interest.

Is there a museum or visitor center near the caves?

Yes, near the Oliero Caves, there is a Speleological and Karst Museum. This museum provides further insights into the local geology, flora, and fauna, enriching the visitor experience.

Are there any less crowded cave options for a more tranquil experience?

Anguane's Cave is noted by the komoot community for its tranquility and unique, peaceful setting. While the Oliero Caves can be popular, visiting during off-peak times, such as spring, might offer a less crowded experience.

Can I find cafes or refreshment options near the caves?

Yes, within the natural park surrounding the Oliero Caves, there is a bike grill bar where visitors can relax and get refreshments.

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

PosinaArsieroSchioVelo D'AsticoValli Del PasubioTonezza Del CimoneLaghiTorrebelvicinoSantorsoAsiagoCogollo Del CengioRecoaro TermeRoanaCaltranoValdasticoRotzoAlbettonePiovene RocchetteCastegneroNantoBarbarano MossanoMossanoVillagaCampiglia Dei BericiPedemonteValdagnoCalveneMontegaldellaLusiana ConcoSossanoGallioCrespadoroGranconaAltavilla VicentinaArcugnanoBrendolaZovencedoLugo Di VicenzaLongareVal LionaCarrèZanèChiuppanoAgugliaroLastebasseCornedo VicentinoEnegoMontegaldaAltissimoSan Vito Di LeguzzanoSaregoLonigoMonte Di MaloMontecchio MaggioreBroglianoOrgianoAlonteCismon Del GrappaMaloMarano VicentinoValstagnaCampolongo Sul BrentaBassano Del GrappaPove Del GrappaSolagnaTrissinoFozaNogarole VicentinoZuglianoConcoMontebello VicentinoMarosticaThieneSan Pietro MussolinoCreazzoRomano D'EzzelinoTorri Di QuartesoloGrumolo Delle AbbadesseChiampoSic Altopiano Dei Sette ComuniCastelgombertoIsola VicentinaGambuglianoSovizzoSalcedoVillaverlaGrisignano Di ZoccoSarcedoMolvenaArzignanoNoventa VicentinaMontevialeZermeghedoPianezzeBreganzeFara VicentinoColceresaNoveRosàPojana MaggioreMussolenteCassolaGambellaraCamisano Vicentino

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