Best natural monuments around Saint-Martin-La-Plaine are found within the Monts du Lyonnais and the Pilat region. This area features several elevated points offering extensive views of the surrounding valleys. The landscape includes notable summits and unique geological formations. These natural features provide opportunities for outdoor exploration and connect visitors with the region's natural and historical elements.
Last updated: July 2, 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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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 region around Saint-Martin-La-Plaine, particularly within the Monts du Lyonnais and Pilat, offers several notable natural monuments. Key highlights include Le Signal de Saint André, a summit with a belvedere offering extensive valley views, and Crêt Malherbe – Highest point of the Monts du Lyonnais, providing panoramic vistas. Another unique site is Les Roches de Marlin, also known as “Devil’s Stones,” a megalithic site with views of the Gier valley.
The natural monuments in this area are primarily characterized by elevated points and unique rock formations. You'll find summits like Crêt Malherbe and Le Signal de Saint André, which are high-altitude peaks offering panoramic views. Additionally, Les Roches de Marlin stands out as a distinctive megalithic site, featuring ancient rock formations.
Yes, some natural monuments in the area have historical significance. Le Signal de Saint André is a landscaped summit that commemorates the locations used by geographer César-François Cassini de Thury between 1758 and 1761. Les Roches de Marlin is known as one of the best-known megalithic sites in the Pilat region, associated with very ancient and mysterious stories.
The region offers a variety of outdoor activities. You can explore numerous routes for gravel biking, road cycling, and running. For instance, there are challenging gravel biking routes like the 'Wide track on the heights – Col de la Croix du Planil loop' and road cycling options such as the 'Montvieux Cross – Pavezin Pass loop'. Running enthusiasts can find trails like the 'Bozancon Crossing loop'. You can find more details on these activities and routes in the Gravel biking around Saint-Martin-La-Plaine, Road Cycling Routes around Saint-Martin-La-Plaine, and Running Trails around Saint-Martin-La-Plaine guides.
Yes, the area around Saint-Martin-La-Plaine offers hiking opportunities with varying difficulty levels. While specific hiking trails directly to each natural monument are not detailed, the region's overall outdoor activity guides suggest routes that range from moderate to difficult. For example, some running and cycling routes are classified as 'moderate' or 'difficult', indicating varied terrain that can be explored on foot. Always check individual route details for specific difficulty ratings.
While the primary natural monuments like summits and megalithic sites might be more suited for active explorers, the nearby Châtelus Castle and Virgin's Fountain is listed as family-friendly. This site offers a charming village experience with a castle and a refreshing fountain, which can be an enjoyable outing for families.
The best season to visit the natural monuments around Saint-Martin-La-Plaine generally depends on your preferred activities. Spring and autumn offer pleasant temperatures for hiking and cycling, with vibrant foliage or blooming landscapes. Summer is ideal for enjoying longer days and warmer weather, though some trails might be more exposed. Winter can offer unique, snow-covered vistas, especially at higher elevations like Crêt Malherbe, but requires appropriate gear and caution due to potentially challenging conditions.
For hiking and exploring the natural monuments around Saint-Martin-La-Plaine, it's advisable to wear comfortable, layered clothing suitable for outdoor activities. Sturdy hiking shoes with good grip are essential, especially for summits like Le Signal de Saint André or rocky areas like Les Roches de Marlin. Depending on the season, bring rain gear, sun protection, and extra layers for warmth, as weather conditions can change, especially at higher altitudes.
Yes, several natural monuments in the region are renowned for their excellent viewpoints. Le Signal de Saint André features a belvedere that provides extensive views overlooking the valley. Similarly, Crêt Malherbe – Highest point of the Monts du Lyonnais offers panoramic views across the entire Monts du Lyonnais. Les Roches de Marlin also provides a breathtaking view of the Gier valley.
Visitors particularly appreciate the stunning panoramic views from the summits and the unique geological and historical aspects of the sites. The opportunity to connect with nature and explore the region's elevated points, such as Le Signal de Saint André and Crêt Malherbe, is highly valued. The mysterious allure of sites like Les Roches de Marlin also captivates many.
Information regarding specific public transport options directly to each natural monument is not readily available. It is generally recommended to use personal vehicles to access these sites, especially those located in more remote or elevated areas within the Monts du Lyonnais and Pilat regions. You may find local bus services to nearby towns, but onward travel to the monuments themselves might require a car or a significant walk.
While specific parking details for each individual natural monument are not provided, it is common for popular natural sites and trailheads in the Monts du Lyonnais and Pilat regions to have designated parking areas. For summits like Le Signal de Saint André, access is often via a small path from a nearby parking spot. It's advisable to check local signage or maps for parking availability before your visit.


Extend your search for the best caves by checking out these guides of the top ones around Saint-Martin-La-Plaine: