Nature Reserve Guide
The province of Viterbo is home to 7 nature reserves, part of a network of protected areas safeguarding the region's natural and historical heritage. These reserves showcase a diverse range of landscapes, from the volcanic caldera of Lake Vico surrounded by ancient forests to the rugged terrain of Selva del Lamone, which sits upon an ancient lava flow. Other areas feature deep gorges carved into tuff rock, rolling hills, and archaeological sites from the Etruscan era. The varied terrain provides…
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Last updated: April 23, 2026

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Riserva Naturale Regionale Valle Dell'Arcionello protects a volcanic gorge and Monte Palanzana, offering diverse routes for hiking, road cycling, and mountain biking.
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Riserva Naturale Regionale Lago di Vico offers diverse routes for hiking, cycling, and mountain biking through ancient forests, volcanic hills, and along Lake Vico.
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Riserva Naturale Selva Del Lamone offers a distinctive volcanic landscape for hiking, mountain biking, and road cycling with over 50 routes.
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Riserva Naturale Monte Casoli Di Bomarzo offers diverse terrain, from volcanic plateaus to oak forests, ideal for hiking, road cycling, and mountain biking routes.
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Riserva Naturale Regionale Monte Rufeno offers diverse landscapes, from woodlands to Mediterranean shrubland, perfect for hiking, mountain biking, and road cycling routes.
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Urban Park Citta' di Sutri is a nature reserve with unique geological features, offering diverse routes for hiking, mountain biking, and road cycling through forested hills and valleys.
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Riserva Naturale Provinciale Tuscania offers diverse terrain with rolling hills and deep gullies, perfect for hiking, biking, and road cycling routes.
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The nature reserves in Viterbo are protected areas established to conserve the region's biodiversity, landscapes, and historical sites. The province contains 22 protected natural areas, and this page details 7 of them. These reserves feature varied landscapes, including volcanic lakes, dense forests on ancient lava flows, and deep gorges, offering numerous routes for outdoor activities.
The main nature reserves in Viterbo, based on visitor activity, include the Riserva Naturale Regionale Valle Dell'Arcionello, which protects a volcanic gorge, and the Riserva Naturale Regionale Lago di Vico, centered around a volcanic caldera lake. Another significant area is the Riserva Naturale Selva Del Lamone, a rugged forest landscape over an old lava flow.
The primary activities in Viterbo's nature reserves are hiking, cycling, and mountain biking, with over 600 routes available across the region. Other popular activities include road cycling and trail running. The varied terrain, from lakeside paths to forested hills, provides options for multiple sports and difficulty levels.
The Riserva Naturale Regionale Lago di Vico offers over 120 routes. These include hiking trails through ancient beech forests, mountain bike routes on the slopes of Monte Venere, and cycling paths around the lake. The terrain consists of rolling volcanic hills and lakeside flats.
The Riserva Naturale Selva Del Lamone has a unique and rugged landscape formed on an ancient lava flow. It is characterized by a dense forest of oak and holm oak trees and distinctive heaps of moss-covered lava boulders known as 'murce'. The Olpeta River crosses the reserve, creating features like the Salabrone waterfall.
Yes, there are extensive hiking opportunities across Viterbo's nature reserves. For example, the Riserva Naturale Regionale Lago di Vico has nearly 50 designated hiking routes. Trails vary from gentle walks along the lake to more challenging ascents in the surrounding hills.
Mountain biking is a popular activity, with trails available in most of Viterbo's nature reserves. The Riserva Naturale Monte Casoli Di Bomarzo offers over 30 routes suitable for both standard and easy mountain biking. The terrain includes volcanic plateaus and oak forests, providing a mix of technical and flowing trails.
Yes, several reserves offer trails suitable for families. The area around Lake Vico, within the Riserva Naturale Regionale Lago di Vico, has flatter paths along the shore that are ideal for easier walks. Many reserves feature a mix of trail difficulties, allowing for shorter, less strenuous outings.
Regulations regarding dogs vary by reserve. In general, dogs are permitted but must be kept on a leash to protect wildlife and for the consideration of other visitors. It is always advisable to check the specific rules for each reserve, such as the Riserva Naturale Regionale Lago di Vico, before visiting.
The nature reserves in Viterbo can be visited year-round, but spring and autumn are often considered ideal. These seasons typically offer mild temperatures suitable for hiking and cycling. Summer can be hot, making early morning or late afternoon activities more comfortable, especially around the lakes.
The Riserva Naturale Regionale Monte Rufeno is known for its high biodiversity, vast forests, and historic farmhouses. The reserve contains the 'Sentiero dei Briganti' hiking trail, a Museum of Flowers, and an Astronomical Observatory. Its landscape consists of rolling hills and numerous streams.

