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Italy
Lazio
Frosinone

Vicalvi

Top 7 Natural Monuments around Vicalvi

Best natural monuments around Vicalvi are found within the picturesque Comino Valley, a region in Lazio, Italy. This area is characterized by its natural landscapes, including hills, forests, and emerald waterways. Vicalvi's location provides access to protected areas such as the Lake and Nature Reserve of Posta Fibreno and lies near the Abruzzo, Lazio and Molise National Park. The surrounding environment offers diverse natural features for exploration.

Best natural monuments around Vicalvi

  • The most popular natural monument is Lake Posta Fibreno, a lake that is a protected natural area known for its unique ecological characteristics. The lake is fed by underground springs and is home to the endemic "Carpione del Fibreno" and rare macrostigma trout.
  • Another must-see spot is Fossa Maiura, a karst depression that forms a natural amphitheater. This gigantic sinkhole is about 100 meters deep and is the origin of the waters that feed the Fibreno river.
  • Visitors also love Punta Mazza, a summit that is part of the Abruzzo group of the Marsicani Mountains. From this 1776 meter high peak, views extend to Sora, the Lepini Mountains, and the Sacco Valley.
  • Vicalvi is known for its lakes, karst depressions, and mountain peaks. The region offers diverse natural landscapes, from hills and forests to unique geological formations and mountain environments.
  • The natural monuments around Vicalvi are appreciated by the komoot community, with more than 40 upvotes and 16 photos shared.

Last updated: June 28, 2026

Lake Posta Fibreno

Highlight • Lake

The nature reserve Lago di Posta Fibreno is a protected natural area located in the municipality of Posta Fibreno, in the province of Frosinone. It is known for the presence of a floating island already mentioned by Pliny the Elder in his Naturalis historia (source: Wikipedia it.wikipedia.org/wiki/Riserva_naturale_lago_di_Posta_Fibreno).

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Fossa Maiura

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A few kilometers from the town of Alvito, among the mountains bordering Abruzzo, there is the so-called Fossa Maiura (815 m), a karst depression that almost forms a natural amphitheater: it is a gigantic sinkhole about 100 meters deep and about 3 km in circumference, in the shape of an inverted truncated cone with a perimeter of more than a kilometer. This is where the waters that feed the Fibreno originate.

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Punta Mazza

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This peak (1776 m) is part of the Abruzzo group of the Marsicani Mountains and is located on the border of the Abruzzo, Lazio and Molise National Park. From here it is possible to see Sora, the Lepini Mountains and the Sacco Valley.

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Gorges of the Melfa River

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Beautiful panorama views. Along the gorges of the Melfa river between overhangs of living rock, where eagles nest

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Awesome gravel road

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A fantastic stretch of dirt road between Passo Forca d'Acero and the road that goes towards Pescasseroli

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Popular around Vicalvi

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Tips from the Community

Davide Pizzuti
January 9, 2025, Fossa Maiura

A few kilometers from the town of Alvito, among the mountains bordering Abruzzo, there is the so-called Fossa Maiura (815 m), a karst depression that almost forms a natural amphitheater: it is a gigantic sinkhole about 100 meters deep and about 3 km in circumference, in the shape of an inverted truncated cone with a perimeter of more than a kilometer. This is where the waters that feed the Fibreno originate.

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It's magnificent in its beauty and calm. Three deer rushed in front of us and crossed the path. Further into the woods, loose horses walked in front of us.

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A fantastic stretch of dirt road between Passo Forca d'Acero and the road that goes towards Pescasseroli

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Nature of Sal
October 24, 2022, Punta Mazza

This peak (1776 m) is part of the Abruzzo group of the Marsicani Mountains and is located on the border of the Abruzzo, Lazio and Molise National Park. From here it is possible to see Sora, the Lepini Mountains and the Sacco Valley.

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The lake of Posta Fibreno, also known as lake of the Post, is located in the Comino Valley on the border of Lazio with Abruzzo and Molise, in the middle valley of the Liri, in the center of the homonymous reserve in the province of Frosinone, the Lazio side of the National Park of Abruzzo, Lazio and Molise. Source: https://it.wikipedia.org/wiki/Lago_di_Posta_Fibreno

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Beautiful panorama views. Along the gorges of the Melfa river between overhangs of living rock, where eagles nest

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A super gravel road descending through the National park, heading north/west to Pescaseroli.

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The lake of Posta Fibreno or della Posta, a nature reserve, is one of the most beautiful, characteristic and unspoiled natural oases in all of central Italy. Included in the green Valle di Comino, this huge source of pure water, coming from the slopes of the nearby mountains of the Abruzzo National Park, gives life to the icy and clear Fibreno river. Singular peculiarities of the lake are the floating island and the ancient boat with a flat bottom. The small trout called "Carpione del Fibreno" (endemic) and the rare macrostigma trout find their natural habitat here. The lake has always been frequented by scuba divers or free diving and by birdwatching enthusiasts.

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Frequently Asked Questions

What unique natural features can I discover around Vicalvi?

The region around Vicalvi, particularly within the Comino Valley, offers diverse natural features. You can explore unique geological formations like Fossa Maiura, a gigantic karst depression. The Lake Posta Fibreno is also notable for its floating island and underground springs.

Are there any protected natural areas near Vicalvi?

Yes, the most significant protected area nearby is the Lake and Nature Reserve of Posta Fibreno, known for its unique ecological characteristics. Vicalvi is also situated at the edge of the Abruzzo, Lazio and Molise National Park, one of Italy's oldest and most biodiverse national parks.

What kind of landscapes can I expect in the Comino Valley near Vicalvi?

The Comino Valley, where Vicalvi is located, is characterized by unspoiled nature and breathtaking landscapes. You'll find a mix of hills, forests, and emerald waterways. The valley is bordered by the Apennine mountains, offering diverse natural beauty.

What wildlife might I encounter in the natural areas around Vicalvi?

The region's rich biodiversity, especially near the Abruzzo, Lazio and Molise National Park, means you might encounter various wildlife. The Lake Posta Fibreno is home to specific aquatic life, including the endemic "Carpione del Fibreno" and rare macrostigma trout. On trails like the "Awesome gravel road," visitors have reported seeing deer and loose horses.

Where can I find a floating island near Vicalvi?

The famous floating island can be found at the Lake Posta Fibreno, located in the nearby municipality of Posta Fibreno. This unique phenomenon was even mentioned by Pliny the Elder in his *Naturalis historia*.

What is Fossa Maiura and why is it significant?

Fossa Maiura is a significant karst depression forming a natural amphitheater, located a few kilometers from Alvito. This gigantic sinkhole is about 100 meters deep and approximately 3 km in circumference. It's notable as the origin of the waters that feed the Fibreno river.

Are there natural monuments offering panoramic views near Vicalvi?

Yes, for stunning panoramic views, consider visiting Punta Mazza, a summit at 1776 meters. From here, you can see Sora, the Lepini Mountains, and the Sacco Valley. Another great viewpoint is Monte di Togna, offering a breathtaking 360° panorama.

What outdoor activities are available near Vicalvi's natural monuments?

The area around Vicalvi is ideal for various outdoor activities. You can find numerous trails for hiking, running, mountain biking, and road cycling. For detailed routes, explore the Running Trails around Vicalvi, MTB Trails around Vicalvi, and Road Cycling Routes around Vicalvi guides.

Are there hiking trails suitable for beginners around Vicalvi?

Yes, there are options for beginners. For instance, the "San Domenico Abbey (Sora) – Via Lungo Fibreno loop from Carnello" is an easy running trail that can be walked. The Lake Posta Fibreno also offers pleasant walks around its tranquil environment. For more options, check the Running Trails around Vicalvi guide.

What is the best time of year to visit the natural areas around Vicalvi?

The Comino Valley and surrounding natural areas are beautiful throughout much of the year. Spring and autumn generally offer pleasant temperatures for outdoor activities like hiking and cycling, with lush greenery or vibrant fall colors. Summer can be warm but is also suitable for exploring, especially around the lakes.

Are there family-friendly natural monuments around Vicalvi?

Yes, the Lake Posta Fibreno is considered family-friendly. Visitors can enjoy the tranquility, take pleasant walks, or rent pedal boats to explore the lake, making it a great option for families.

Can I find circular walks or loops in the nature around Vicalvi?

Yes, many routes in the area are designed as loops. For example, you can find a "Lake Posta Fibreno – Lake Posta Fibreno loop from Posta Fibreno" for running, or a "Lago di Posta Fibreno – giro ad anello nel Parco Nazionale d'Abruzzo, Lazio e Molise" for mountain biking. Explore the Running Trails and MTB Trails guides for more circular options.

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

Visitors particularly appreciate the unspoiled natural beauty and tranquility of the region. The unique geological features like the floating island at Lake Posta Fibreno and the impressive Fossa Maiura are highly regarded. The panoramic views from summits like Punta Mazza and Monte di Togna are also a major draw.

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

Trevi Nel LazioFilettinoSan Donato Val Di CominoSettefratiPiciniscoGuarcinoVico Nel LazioAlatriCollepardoPiglioTorre CajetaniFiuggiAlvitoAnagniGallinaroCampoli AppenninoSupinoMoroloSerroneTriviglianoAcutoFerentinoEsperiaVeroliPosta FibrenoPalianoVallerotondaSan Biagio SaraciniscoSoraAusoniaGiuliano Di RomaPescosolidoVilla LatinaAcquafondataVallecorsaAtinaCoreno AusonioFumoneSgurgolaAmasenoBroccostellaSant'Elia FiumerapidoRoccaseccaColfeliceCasalatticoArpinoMonte San Giovanni CampanoPontecorvoPatricaCasalvieriFontechiariSantopadreCastelnuovo ParanoCastrocieloPicoSan Giovanni IncaricoIsola Del LiriCastro Dei VolsciCeccanoPofi

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