Best caves around Carzano are found within the Valsugana and Lagorai region, an area characterized by its morphology that has led to the formation of numerous caves and holes. Carzano, situated on the northern edge of the alluvial plain of Scurelle, serves as a gateway to this geologically rich landscape. The region's karst features contribute to a diverse range of natural and historical underground formations.
Last updated: October 30, 2026
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La Grotta del Colo (from the ancient term covolo, meaning cavity or refuge) is a fascinating natural cavity located on the right-hand side of Val Malene, in the municipal territory of Pieve Tesino. Main features Historical and anthropic interest: The entrance to the cave is partially delimited by an ancient dry-stone wall. Inside, engravings and inscriptions dating back to the 17th century can be observed (including a dating from 1675). Glacial and karstic evidence: In addition to limestone incrustations, at the bottom of the cave there are granite pebbles transported by glaciers during the last glaciation, when the valley was covered by ice. Internal structure: The main chamber extends for about 65 meters in depth and about 10 meters in width. On the left, a narrow tunnel about twenty meters long (requiring crawling) opens up to access a second, smaller cavity. How to reach it and excursion Itinerary: The excursion
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Very steep section that leads to the top of Ortigara, it is useful to have a headlamp with you
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The tunnel was initially an Austro-Hungarian machine gun emplacement (2093 m), designed to defend the overlooking 2101 m of Mount Ortigara. It was later captured by the Alpine troops during the first attack on June 10, 1917, becoming the headquarters of the Italian command of Colonel Pietro Biancardi, from whom it takes its current name. A must-see on the trail connecting the summit of Mount Ortigara to the Agnella Pass: fascinating, steep, and facilitated by steps and ropes. The imperial emplacements are accessed by descending into a shaft using metal supports (technical descent, only for experts).
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During the First World War, in view of the Battle of Ortigara in 1917, the area on the eastern slopes of Cima Caldiera was transformed into an Italian logistics base of enormous tactical importance: one of the main storage centers for food, ammunition, tools and materials needed for combat and the sustenance of the troops. It was located on the slope sheltered from enemy fire, but close to the front line, to which it was connected by a web of walkways; it was accessible via a wide and comfortable road from Piazzale Lozze, which is now used as a path; the six tunnels dug one after the other, connected internally by a single corridor, served as warehouses and were hidden from view by external wooden barracks that, leaning against the rock, covered the entrances. Two interesting tables show the inventory of the goods stored: food for the soldiers, daily rations and materials for the Engineers.
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Karst gorge typical of this type of mountain. There are many throughout the plateau, just look carefully at the maps
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Unpaved stretch, not too demanding, from where you can enjoy very beautiful landscapes and on occasion not very frequented passages
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Along the road that goes from Campogallina to Selletta Mecenseffy and Bivio Italia, you come across this very deep well classified in the Venetian speleological register. The entrance to the well is located at street level and is not protected in any way. Therefore, pay maximum attention especially if you have children or even animals. It could be very dangerous.
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The Valsugana and Lagorai region, near Carzano, offers a variety of underground formations. You can explore historical military caves, such as World War I fortifications, and natural geological wonders like sinkholes and karst chasms. Examples include the historical Quota 2093 / Biancardi Gallery WW1 and the natural Buso dei Quaranta sinkhole.
While many caves in the immediate Valsugana and Lagorai region are suitable only for expert visitors with a guide, the Cave of Castello Tesino is the only cave in the entire Trentino area generally accessible to the public. It's a notable option if you're looking for a guided, accessible cave experience.
The area around Carzano is rich in World War I history. You can visit sites like the Quota 2093 / Biancardi Gallery WW1, which was an Austro-Hungarian machine gun emplacement and later an Italian command headquarters. Another significant site is the Cima Caldiera Logistics Base Caves (World War I), which served as an Italian logistics base for supplies during the Battle of Ortigara.
Many of the natural karst features and historical tunnels in the Carzano area, such as deep sinkholes and WWI emplacements, can be challenging and may not be suitable for young children due to steep sections or unprotected entrances. For a generally accessible option, consider the Cave of Castello Tesino, which is known for public access in the broader Trentino region.
The region is characterized by significant karst features. You can find spectacular sinkholes like Buso dei Quaranta, a large collapse sinkhole bordered by vertical rock walls. There are also deep karst chasms, such as the Chasm below Cima XII, where snow can persist even in summer due to its perpetually shaded bottom.
When exploring historical tunnels or natural karst features, it's advisable to wear sturdy hiking boots and bring a headlamp, especially for sites like Quota 2093 / Biancardi Gallery WW1, which has steep sections. Temperatures inside can be cooler, so layers are recommended.
The Carzano area is excellent for various outdoor activities. You can find numerous hiking trails, including challenging mountain hikes. For cycling enthusiasts, there are gravel biking routes. Explore options like Hiking around Carzano or Gravel biking around Carzano for routes that might pass near some of these geological or historical sites.
Yes, the Valsugana and Lagorai region has many caves and holes that are only suitable for expert visitors accompanied by a guide. Features like the Busa del Can Sinkhole, a very deep well, require extreme caution and are not protected, making them suitable only for experienced individuals aware of the risks.
The best time to visit the caves and explore the surrounding area generally depends on the specific activity. For hiking and exploring outdoor cave entrances or historical tunnels, late spring through early autumn (May to October) offers more favorable weather. However, some deep karst chasms, like the Chasm below Cima XII, retain snow even in summer, so be prepared for cooler conditions inside.
For additional information about the caves and natural attractions in the broader Valsugana region, you can consult resources like the official Valsugana tourism website. For example, visitvalsugana.it provides details on the region's natural caves.
Yes, extreme caution is advised. Natural formations like the Busa del Can Sinkhole have unprotected entrances at street level and can be very dangerous, especially if you have children or animals. Always be aware of your surroundings and respect any warning signs.


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