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Siris

Top 7 Natural Monuments around Siris

Best natural monuments around Siris include a diverse range of geological formations and ancient sites. This region features volcanic summits, basaltic plateaus, and historical monuments. Visitors can explore a variety of natural and man-made structures that showcase the area's unique landscape and heritage. The guide lists 5 natural monuments to discover.

Best natural monuments around Siris

  • The most popular natural monument is Monte Arci - Trebina Longa, a summit that is the highest point of Monte Arci at 812 m above sea level. This large basaltic rock is visible from the S.S. 131 and offers challenging routes through a wooded setting.
  • Another must-see spot is Tomb of the Giants Sa Domu e S'Orku, a historical site and natural monument. This is one of the best preserved Nuragic funerary monuments in Sardinia, located within the archaeological site of the Giara di Siddi.
  • Visitors also love Rio Is Salonis Waterfall, a natural monument featuring two drops. Access involves walking a few dozen meters on rock after crossing a small metal bridge.
  • Siris is known for its volcanic summits, ancient historical sites, and waterfalls. The region offers a variety of natural monuments to see and explore, from geological formations to archaeological wonders.
  • The natural monuments around Siris are appreciated by the komoot community, with 9 photos and 20 upvotes shared by visitors.

Last updated: May 16, 2026

Monte Arci - Trebina Longa

Highlight • Summit

The highest point of Monte Arci at 812 m above sea level is a large basaltic rock also visible from the S.S. 131. There are various routes to get there, all very hard with gradients of up to 20% in some sections, but within a spectacular wooded setting.

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Tomb of the Giants Sa Domu e S'Orku

Highlight • Historical Site

Site that can be visited free of charge independently, but a paid guided tour should also be possible through the municipal services.

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Giara di Siddi

Highlight (Segment) • Natural Monument

Seen from above, it has a curious inverted 'T' shape, with high steep walls, but this is not its only peculiarity: the southern side has reddish spots and, inside, preserves precious pre-Nuragic and Nuragic legacies, including one of the Tombs of Giants best preserved on the island. The Giara di Siddi, also known as su Pranu, is one of the three basaltic 'tables' of Marmilla that originated following a lava flow that occurred between two and five million years ago. Over time, the atmospheric agents eroded the sandstone rock, while the solidified layers of lava were preserved at a higher level, giving rise, in addition to the Giara di Siddi, to that of Serri and sa Jara Manna (or Giara di Gesturi), the largest of the three, 'home' of the famous little horses.
Rich in many archaeological remains from the Nuragic era, such as the Tomb of the Giants of SA Domu and S'Orku and a protonuraghe on the slopes towards Siddi.
in the southern part there is the sad wreck of a chair lift, a sign of a perverse attempt at tourist development

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Rio Is Salonis Waterfall

Highlight • Waterfall

After crossing a small metal bridge that crosses the stream, leave your bikes and walk a few dozen meters on rock. After climbing over a low fence, descend 50 meters to the waterfall, which has two drops.

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Perlite quarry

Highlight • Structure

Here is the Luisu Sanna Mine, an old perlite quarry that was once the beating heart of local mining activity.

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Tips from the Community

penna1973
August 18, 2025, Cascata Rio Is Salonis

in August there is no trace of water

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Cascata del Rio Salonis is one of the tourist attractions to see in the Municipality of Morgongiori. Unfortunately it is often without water.

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Disused quarry, known by the name of "ziu Luisu". In the open air, there is also a tunnel closed by an iron gate. A little further on, on the right, a long descent begins that leads back to the country church of Santa Suia

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After crossing a small metal bridge that crosses the stream, leave your bikes and walk a few dozen meters on rock. After climbing over a low fence, descend 50 meters to the waterfall, which has two drops.

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Here is the Luisu Sanna Mine, an old perlite quarry that was once the beating heart of local mining activity.

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Beautiful 😍

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Sa Dome and s'Orku, one of the best preserved giants' tombs on the island

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Volcanic black stone, highest point of Monte Arci

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Frequently Asked Questions

What natural features can I explore around Siris?

The region around Siris offers a diverse range of natural features, including volcanic summits like Monte Arci - Trebina Longa, basaltic plateaus such as Giara di Siddi, and the scenic Rio Is Salonis Waterfall. You can also discover historical sites integrated with the natural landscape.

Are there challenging natural monuments for experienced hikers near Siris?

Yes, Monte Arci - Trebina Longa, the highest point of Monte Arci, offers challenging routes with gradients up to 20% in some sections, set within a spectacular wooded environment. The Perlite quarry also involves intermediate to challenging sections.

Where can I find waterfalls around Siris?

The Rio Is Salonis Waterfall is a natural monument featuring two drops. Access involves walking a few dozen meters on rock after crossing a small metal bridge. Be aware that it is often without water, especially in August.

What historical natural monuments can I visit near Siris?

You can visit the Tomb of the Giants Sa Domu e S'Orku, one of the best-preserved Nuragic funerary monuments in Sardinia, located within the archaeological site of the Giara di Siddi. The Perlite quarry, an old disused mine, also holds historical significance related to local mining activity.

Can I visit ancient Nuragic sites around Siris?

Yes, the Tomb of the Giants Sa Domu e S'Orku is a prime example of a well-preserved Nuragic funerary monument. It is situated within the Giara di Siddi, which itself is rich in many archaeological remains from the Nuragic era.

What outdoor activities can I do near the natural monuments around Siris?

Beyond exploring the natural monuments themselves, the area around Siris offers various outdoor activities. You can find numerous cycling routes, including road cycling and touring bicycle options, as well as running trails. For more details on routes, you can check the Road Cycling Routes around Siris guide, the Cycling around Siris guide, and the Running Trails around Siris guide.

Are there hiking trails near these natural monuments?

Yes, the natural monuments themselves often feature trails. For instance, Monte Arci - Trebina Longa offers challenging routes through a wooded setting. For a broader range of hiking and running options, explore the Running Trails around Siris guide, which includes routes like the Nuraghe Domu Beccia loop.

What do visitors enjoy most about the natural monuments around Siris?

Visitors appreciate the unique combination of natural beauty and historical significance. Highlights like Monte Arci - Trebina Longa are praised for their challenging routes and spectacular wooded settings, while the Tomb of the Giants Sa Domu e S'Orku is noted as one of the best-preserved Nuragic funerary monuments, offering a timeless experience.

Is the Tomb of the Giants Sa Domu e S'Orku accessible for independent visits?

Yes, the Tomb of the Giants Sa Domu e S'Orku can be visited free of charge independently. Paid guided tours may also be available through municipal services.

What is the Giara di Siddi and what can I see there?

The Giara di Siddi is a basaltic plateau, also known as su Pranu, formed by ancient lava flows. It's a natural monument with high, steep walls and preserves precious pre-Nuragic and Nuragic legacies, including one of the best-preserved Tombs of Giants on the island, the Tomb of the Giants Sa Domu e S'Orku.

Are there any viewpoints among the natural monuments?

Yes, Monte Arci - Trebina Longa is a summit offering expansive views. The Giara di Siddi also serves as a viewpoint, providing unique perspectives of the surrounding landscape.

What is the Perlite quarry and its significance?

The Perlite quarry, also known as the Luisu Sanna Mine, is a disused quarry that was once a significant site for local mining activity. It features open-air sections and a tunnel, offering a glimpse into the region's industrial past within a natural setting.

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