Caves around Budoia offer insights into the rich underground heritage of the Friuli-Venezia Giulia region. This municipality, situated in a karst landscape, features various natural cavities and springs. The area is characterized by its geological formations, including sinkholes and caves, which are often associated with local folklore. Exploring these natural features provides a perspective on the region's unique terrain.
Last updated: June 29, 2026
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Boral del Giaz, "ice pit", is an interesting area of block karst that branches off from the Cansiglio Alpine Botanical Garden in Campedei, a meadow area that precedes the large Cornesega depression. It is so called because of the presence of a cavity, the Bus del Giaz, from which cold air at a constant temperature of about 6 °C comes out. In the past, this was used by locals as a natural refrigerator. It is crossed by the A1 hiking trail.
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The Gorgazzo springs have the characteristic of collecting rainwater which, infiltrating the karst structure of the Cansiglio plateau, emerges at the base of the mountain with an already considerable flow rate.
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A magical place, with an incredible scientific history. Always worth a stop.
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The name probably derives from "lume" or flame, due to the luminescence that would have been seen on summer nights above the cavity, produced by the gases generated by the putrefaction of animal carcasses thrown into the well. The cavity was formed by karst, or by the dissolution of the rock by water. According to legend, it is inhabited by the Anguane, very ugly fairies, with nails instead of hair, and long fangs instead of teeth. During the day they went to wash clothes at Lake Santa Croce, then wandered around in search of wood, food and children to roast. At night, they lit a small fire, whose light, spotted by shepherds, gives the cavity its name
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The Gorgazzo source is an underwater cave where the stream of the same name originates, a tributary of the Livenza river. Located near Polcenigo, its name derives from the Friulian gorc which means precisely abyss. The cave consists of a resurgence and near the mouth of the cavity, nine meters deep, the statue of a Christ was placed, which thanks to the clarity of the water and the bottom is visible from the outside from the shore on sunny days .
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Gorgazzo source with adjoining restaurant and area with tables for shaded breaks
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It is a very imposing cavity and opens NE of Zuc Toronto, about 7m high perforated by a chimney that reaches the surface. There is a bench where you can comfortably stop, under which there is a notebook with pen to leave your hiking thoughts.
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The Budoia area, being a karst landscape, features a variety of natural formations. You can explore natural cavities, sinkholes, and springs. Notable examples include the beautiful Gorgazzo Spring, known for its vibrant green water, and the Bus de la Lum Sinkhole, a significant karst formation.
Yes, the Gorgazzo Spring is considered family-friendly. While the last few meters to the springs are closed to bicycles, it's still a worthwhile visit for its scenic beauty and unique water features.
Some sites around Budoia hold historical significance. The Bus de la Lum Sinkhole, for instance, is associated with a tragic historical event from World War II. Additionally, you can find the Austrian World War I Bunkers, which are natural inlets used as warehouses during the war.
Absolutely. The Bus del Gias Cave is a natural cavity so narrow and deep that it retains ice and snow year-round. Historically, shepherds used it for food storage due to its constant low temperatures.
The area around Budoia offers various outdoor activities. You can find numerous routes for road cycling, running, and gravel biking. For example, there are challenging road cycling routes like the 'View of Lake Santa Croce – Lake Barcis loop' and running trails such as the 'Rujal Channel – San Tomè Chapel loop'. You can explore more options on the Road Cycling Routes around Budoia, Running Trails around Budoia, and Gravel biking around Budoia guide pages.
Yes, the Bus de la Lum Sinkhole is linked to local legends. Its name, meaning 'bus of the light', is said to derive from a luminescence seen above the cavity, and local folklore associates it with mythological creatures called Anguane. The nearby Bus delle Anguane also has similar folklore, though it is not suitable for casual visits.
Visitors frequently highlight the natural beauty and unique characteristics of the area. The Gorgazzo Spring is particularly praised for its 'fabulous green' water and is considered a must-visit. The variety of sinkholes and deep natural cavities also offers a unique perspective on the region's terrain.
While the Bus delle Anguane cave is located in Budoia and has local folklore attached to it, it is not suitable for casual visits. A significant safety concern was noted in 2008 regarding unexploded ordnance found at its entrance, making it dangerous. For more historical context on the legend, you can refer to this article: Bus dele Anguane.
The Antro delle Mate is an imposing cavity that features a bench where you can comfortably stop and even leave your hiking thoughts in a notebook provided there.
To explore the Austrian World War I Bunkers, you can descend from the wide path in the Tamarethe area into the valley along a narrow track. This will lead you to the natural inlets and bunkers that served as warehouses during the First World War.
Many of the caves and natural features are accessible via local trails. For instance, the Grotta del Pesce is mentioned as a point of interest on hiking routes that include Budoia. You can find various running and gravel biking trails in the area that may pass by or near these natural sites. Check the Running Trails around Budoia and Gravel biking around Budoia guides for detailed routes.


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