Best natural monuments around Saint-Didier-Sous-Riverie are found within the Monts du Lyonnais region, offering a blend of natural beauty and historical elements. The area features diverse landscapes, from valleys with ancient aqueducts to high points providing expansive views. These sites provide opportunities for exploration, often accessible via hiking trails. Saint-Didier-Sous-Riverie is characterized by its varied terrain, making it suitable for discovering natural and geological formations.
Last updated: July 3, 2026
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Landscaped summit (accessible on foot) commemorating the locations of the geographer César-François Cassini de Thury between 1758 and 1761.
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The Roches de Marlin, also called “Devil’s Stones”, are located at an altitude of 1,370 meters and offer a breathtaking view of the Gier valley. At the origin of very ancient and mysterious stories, they are one of the best-known megalithic sites in the Pilat region.
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Located on a plateau at an altitude of 330 meters, the Montagny meadows and moors area was protected in 1993 in order to preserve the integrity of biological balances and prevent the disappearance of animal and plant species. Nine remarkable bird species, three invertebrate species, nine plant species and one European amphibian (great crested newt) live in this environment. Note that mountain biking off the trails is prohibited in this area.
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The Signal de Saint André, at an altitude of 934m, is one of the highest points of the Monts du Lyonnais. At the top, accessible on foot via a small path, a belvedere allows you to enjoy a view overlooking the Valley.
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The Crêt Malherbe is the highest point of the Monts du Lyonnais with an altitude of 943 meters (only 934 meters for the Signal de Saint André).
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Magnificent little village in the Monts du Lyonnais, with a splendid fountain engraved with very fresh water, a pretty castle, and a church that has nothing to envy.
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The Monts du Lyonnais region offers several notable natural monuments. Visitors often enjoy Le Signal de Saint André, one of the highest points with a belvedere offering expansive views. Another popular spot is the Prairies and Heathlands of Montagny (Protected Area), recognized for its ecological importance and diverse wildlife.
Yes, the area beautifully blends natural beauty with historical elements. The Valley of the Bozançon features remnants of Roman aqueducts and old water mills. You can also explore the Aqueducts of Jurieux, which are significant Roman remains near Saint-Didier-sous-Riverie, showcasing ancient engineering within a natural landscape. Additionally, Le Signal de Saint André is a landscaped summit commemorating the work of geographer César-François Cassini de Thury.
Many natural sites in the region are suitable for families. The circuit to Le Signal de Saint André is accessible for families, though good walking shoes are recommended. The Châtelus Castle and Virgin's Fountain also offers a charming village setting with natural elements that families can enjoy.
You can expect diverse landscapes, including high points like Crêt Malherbe – Highest point of the Monts du Lyonnais, offering panoramic views. There are also protected natural areas such as the Prairies and Heathlands of Montagny, valleys with historical significance like the Bozançon, and unique geological formations such as Les Roches de Marlin.
The area is excellent for outdoor activities. You can find numerous hiking trails, such as the 'Boutonne Viaduct – Jurieux Aqueduct loop' or the 'Le Signal de Saint André – Saint Catherine Church loop'. For cycling, routes like 'Sainte-Croix-en-Jarez loop' or 'Saint Didier loop' are available. You can explore more options for hiking, cycling, and road cycling around Saint-Didier-Sous-Riverie.
Yes, several natural monuments provide stunning panoramic views. Le Signal de Saint André, at 934 meters, offers views across the Rhône valley, Lyon, and even the Alps on clear days. Les Roches de Marlin also provide breathtaking views of the Gier valley.
The Monts du Lyonnais region is beautiful throughout the year. Spring and autumn offer pleasant temperatures for hiking and exploring, with vibrant foliage or blooming wildflowers. Summer is ideal for longer days and outdoor activities, while winter can provide a unique, tranquil experience, especially if you're prepared for cooler weather.
Many trails and natural areas in the Monts du Lyonnais are dog-friendly. However, it's always best to keep dogs on a leash, especially in protected areas like the Prairies and Heathlands of Montagny, to protect local wildlife. Always check specific regulations for each site you plan to visit.
Given the varied terrain and potential for hiking, comfortable walking shoes or hiking boots are highly recommended. Layers of clothing are advisable to adapt to changing weather conditions, especially when visiting higher elevations like Le Signal de Saint André. Bringing water, sun protection, and rain gear is also a good idea.
Visitors appreciate the blend of natural beauty and historical significance. The panoramic views from summits like Le Signal de Saint André are highly rated. The unique geological formations of Les Roches de Marlin and the ecological richness of the Prairies and Heathlands of Montagny also receive positive feedback for their tranquil and immersive experiences.
Beyond the more popular spots, exploring areas like the Vallon de la Durèze and Bois des Feuilles can offer a more tranquil experience. These areas are part of hiking circuits that showcase the diverse, serene landscapes of the Monts du Lyonnais, leading through charming hamlets and forested environments away from larger crowds.


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