Best caves around San Giorio Di Susa are found within the Val di Susa, an area characterized by geological formations and historical sites related to underground spaces. The region is part of the Orsiera-Rocciavrè Natural Park, offering various hiking itineraries. San Giorio Di Susa features both natural erosive caves and historical man-made excavations. These sites provide insight into the area's geology and past human settlements.
Last updated: July 13, 2026
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Beautiful sanctuary, too bad it was located in a context in which it loses due to the structures built around it
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A few minutes' detour from the main path leads to an ancient millstone quarry. There are some iron steps planted in the rock to overcome and after a short climb over rubble you enter the quarry where you can see some millstones carved into the rock, but no longer finished.
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Ancient stone quarry, cliff with some climbing routes
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Sanctuary and via Crucis in Forno di Coazze, continuing on you arrive at Colletto del Forno
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The path runs along the Decauville, which is the stretch where the gauge railway ran in the early twentieth century. The mountain railway line connected Lake Dietro la Torre and Lake Malciaussia. There are fixed ropes to facilitate progression. Obviously it is essential to have a flashlight with you.
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The Virgin Mary depicted and venerated here is that of Lourdes. This well-known Marian pilgrimage site is located in the French Pyrenees and is visited by a large number of people every year, including many sick people hoping for healing. The devotional image of the Mother of God has spread widely, not only in France, and believers have built Lourdes chapels and grottos everywhere. The ecclesiastical memorial day "Our Lady of Lourdes" is on February 11th, this is the anniversary of the apparition of Mary (1858), when the Mother of God appeared to the 14-year-old Bernadette Soubirous in a rock grotto not far from Lourdes. Bernadette later became a nun and died at the age of only 35. On December 8 (the feast of the Immaculate Conception of Mary) 1933, she was canonized by Pope Pius XI. The commemoration of the Lourdes Madonna is also World Day of the Sick.
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It is certainly an interesting and varied tour with a wide view over the valley and upstream
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The area around San Giorio di Susa offers a mix of natural and man-made underground spaces. You can find natural erosive caves like Le Voute Caves, which are of geological interest, as well as historical quarries such as Antica Cava di Rocaforte and Pera Furà Millstone Cave, where ancient millstones were carved. There are also unique man-made structures like the Decauville Tunnel, a historical railway tunnel.
Yes, the Sanctuary of Our Lady of Lourdes, a devotional grotto, is considered family-friendly and offers a peaceful setting surrounded by nature. For a more adventurous but still accessible experience, the Decauville Tunnel can be an exciting exploration for families, especially with a flashlight.
Many caves and underground sites in the region have significant historical value. Le Voute Caves, for instance, hosted seasonal settlements of Neolithic pastoralists. The historical quarries like Antica Cava di Rocaforte and Pera Furà Millstone Cave showcase the region's past industrial heritage, where materials were extracted for construction. The Decauville Tunnel is a remnant of an early 20th-century mountain railway.
The natural caves, such as Le Voute Caves, are primarily the result of erosive phenomena, making them areas of geological interest. The broader Val di Susa region, where San Giorio di Susa is located, is known for its diverse geological formations, including karstic features. The historical quarries also reveal the types of stone, like calcescisto, gneiss, and metagranite, that are prevalent in the area.
Yes, the area around San Giorio di Susa, particularly within the Orsiera-Rocciavrè Natural Park, offers numerous hiking opportunities. You can find trails that lead to or pass by some of the caves. For more hiking options in the region, explore the Hiking around San Giorio Di Susa guide, which includes routes like the 'Sentiero del Marrone (Chestnut Trail)' and 'From Adrit Village to Pian dell'Orso'.
Beyond exploring the caves, the San Giorio di Susa area provides excellent opportunities for cycling and gravel biking. You can find various routes for different skill levels. For detailed cycling routes, check out the Cycling around San Giorio Di Susa guide, and for gravel biking adventures, refer to the Gravel biking around San Giorio Di Susa guide.
When exploring the Decauville Tunnel, it is essential to bring a flashlight. The path runs along a historical railway stretch, and while characteristic and adventurous, it requires illumination for safe progression.
Yes, Antica Cava di Rocaforte is not only a historical stone quarry but also features some climbing routes. It's known as a cliff with options for climbers.
The Val di Susa region, including San Giorio di Susa, is generally pleasant for outdoor activities from spring through autumn. Visiting during these seasons allows for comfortable exploration of both the caves and the surrounding hiking trails. Always check local weather conditions before your visit, especially if planning to explore natural caves or engage in climbing.
Access to Pera Furà Millstone Cave involves a short stretch of aided path with metal pegs driven into the rock, followed by a section where careful footing is needed to avoid slipping. It's an intermediate-level experience, offering an exceptional view over the Susa valley from the top of the 'pear'.
The 'Voute' caves, also known as Le Voute Caves, are two natural caves resulting from erosive phenomena. They are located upstream of the Rocciamelone stream, on its left orographic side, and are recognized as an area of geological interest.
The Sanctuary of Our Lady of Lourdes is a faithful reproduction of the famous grotto in the French Pyrenees. It serves as a beautiful place of worship and meditation, surrounded by nature, with the Sangone stream nearby. It's a serene spot and a starting point for various excursions.


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