Natural monuments around Òsini/Osini offer a glimpse into Sardinia's geological past within a rugged landscape. This central-eastern Sardinian village is surrounded by impressive natural formations, including dramatic gorges and towering limestone pinnacles. The region is characterized by its steep limestone walls and high plains, providing extensive panoramic views. These sites combine natural beauty with geological significance, making them notable destinations for exploration.
Last updated: June 28, 2026
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Great view. Beautiful area.
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A uniquely shaped, towering tower, a natural monument, symbol of Ogliastra, and a key morphological feature of central-eastern Sardinia. Perhaps once a gathering place for the Nuragic peoples, it later became, in popular legend, the entrance to the underworld. It protrudes from the earth like a giant finger reaching toward the sky and, especially in this wild area, is a landmark visible from afar for hikers. Perda 'e Liana is an extraordinary rock formation declared a natural monument in 1993. The peculiar "mountain," known in Sardinian as Taccu or Tonneri, rises in the Gairo Sant'Elena area: it is the greatest witness to the erosive effects of weathering that have been affecting the vast limestone cover of Ogliastra on the border with Barbagia di Seulo for several million years. Erosion gradually isolated the "tower," forming its base. It is the highest (1293 m) of the numerous Ogliastra limestone mountains, the northern foothills of the Tonneri plateau, about two kilometers away, to which it is connected by the s'Arcu 'e su Pirastu Trottu pass. Perhaps in ancient times, they formed a single mountain ridge. Source and further information: https://www.sardegnaturismo.it/de/entdecken/perda-e-liana
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On Monte IDOLO, hikers will not come across a summit cross - as is often the case. The small sacred monument that instead rises above Sardinia is a statue of SAN MICHELE ARCANGELO. The heavenly messenger is equipped with powerful wings, which give him an imposing figure. However, one will look in vain for a sword or a lance, which are often given to him as an attribute.
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The cave is very worth seeing. We can also recommend the restaurant.
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Nice short tour to the Badegumpen "Is Piscinas". The path can also be covered with smaller children. The bathing pools are beautifully situated, but overall they are a bit small. Swimming is not really possible. There are several smaller pools. But ideal for smaller children. If you are there alone or with just a few people, it can be endured there well. But when there is a large crowd, I don't think it's fun anymore.
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Very worth seeing, even if it was May 2023 with €12 entry p.p. quite expensive
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The natural monument Perda 'e Liana is a protected natural area of Sardinia. It is located in the municipality of Gairo, in the province of Nuoro. It was established in 1993 with a decree of the regional councilor for environmental protection. Source: https://it.wikipedia.org/wiki/Monumento_naturale_Perda_'e_Liana
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Note opening hours. The cave can only be visited as part of a guided tour. Duration 1 to 1.5 hours. The cave is closed from November 1st until spring because then it serves as a winter quarters for bats. In October, for example, there were only 2 guided tours a day at 11 a.m. and 2:30 p.m.
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The region around Osini offers a variety of striking natural monuments. You can explore Sa Perda Stampada Rock Window, known for its bizarre tafoni shapes sculpted by wind and weather. Another must-see is Perda e Liana, a towering limestone pinnacle that serves as a symbolic landmark. Don't miss the dramatic gorge of Scala di San Giorgio, a narrow passage with steep limestone walls, steeped in local legend.
Yes, Is Piscinas Pools and Waterfalls is a great option for families. It offers beautifully situated bathing pools that are suitable for children, providing a refreshing stop during your exploration. The path to the pools is short and manageable even with smaller children.
The area around Osini is excellent for various outdoor activities. You can find numerous running trails, including challenging routes like the Taccu Isàra - Sentiero Italia Loop. For cyclists, there are scenic routes such as 'The little green train and the cliffs of Ulassai – circular tour'. Mountain biking enthusiasts can explore trails like the Sentiero Italia CAI Cycle Route. You can find more details on these activities in the Running Trails around Òsini/Osini, Cycling around Òsini/Osini, and MTB Trails around Òsini/Osini guides.
Perda e Liana is a uniquely shaped limestone pinnacle, standing at 1,293 meters. It's a protected natural area and a prominent landmark visible from great distances, often referred to as a 'heel' due to its distinct shape. Its clear, sheer walls contrast with the surrounding rocks, making it one of Sardinia's most picturesque geological formations.
Yes, the area is home to Su Marmuri Cave, a spectacular stalactite cave. Visitors can explore its impressive formations, though it can only be visited with a guide. Remember to bring warm clothes as the temperature inside the cave is consistently around 10°C.
The best time to visit the natural monuments around Osini for outdoor activities like hiking and exploring is typically during the spring (April-June) and autumn (September-October). During these seasons, the weather is milder and more pleasant for walking, avoiding the intense heat of summer and the cooler, potentially wetter conditions of winter.
Absolutely. The Scala di San Giorgio gorge is not only a geological marvel but also steeped in legend, said to have been created by Saint George. Furthermore, the Taccu di Osini, a natural fortress with steep limestone walls, holds archaeological significance, featuring a complex nuraghe (ancient Sardinian megalithic edifice) with an adjoining village, a cave, and tombs of giants.
The Scala di San Giorgio, or St. George's Staircase, is a dramatic and narrow gorge cutting through the Taccu di Osini. You'll encounter towering limestone walls and a unique geological formation. Legend suggests it was miraculously opened for Saint George. There's also a sanctuary dedicated to the patron saint within the gorge, combining natural beauty with local folklore.
Yes, the Taccu di Osini itself offers exceptional panoramic views. From its high plains, you can enjoy sweeping vistas over Osini, the wider Ogliastra region, and the Barbagie area. Additionally, Monte Idolo, topped with a statue of St. Michael the Archangel, provides great views of the coast and surrounding towns.
While specific dog-friendly designations for each natural monument may vary, many outdoor trails in the Osini region are suitable for dogs, provided they are kept on a leash. It's always recommended to check local regulations or signage at specific sites, especially protected natural areas like Perda e Liana, to ensure compliance.
While many natural outdoor sites like rock formations and viewpoints are generally free to access, specific attractions such as Su Marmuri Cave, which requires a guided tour, will have an entry fee. It's advisable to check for current fees and booking requirements for guided experiences before your visit.
Osini is renowned for its diverse rock formations. You'll encounter dramatic limestone walls and high plains forming natural fortresses like the Taccu di Osini. There are also unique geological features such as the bizarre curved tafoni shapes of Sa Perda Stampada Rock Window and the towering limestone pinnacle of Perda e Liana.


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