Best natural monuments around Marignane offer a variety of natural sites and green spaces. Situated on the eastern shore of the Étang de Berre, the region features diverse ecosystems, from wetlands to coastal areas. These locations provide opportunities for recreation, wildlife observation, and experiencing the Provençal landscape. The area is characterized by its large saltwater lagoons, unique coastal strips, and hills with panoramic views.
Last updated: June 18, 2026
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Description of the hike: follow the path from the parking lot to reach the source. The start is under a large metal portico bearing the inscription "Chemin de l'Infernet". The walk is part of the GR13. It is marked with red and yellow lines. A very simple little walk, no equipment necessary. Very few places for parking!
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Superb loop with amazing panoramas!
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Very very nice hike. Maybe just correct the difference in altitude (280 m cumulative) which in my opinion does not classify it as easy but as intermediate. But it's done well and it's very pleasant!
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Very curious site! Go there, it’s worth the detour!
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Access is from the tamarisks, respect the route and above all the environment. THANKS
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The source of the Infernet seems to be a natural underground water source when it is in fact the result of an artificial watercourse, the Réaltor basin built in 1869. The source finally stops when it meets the pond of Bolmon.
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Reasonably spacious cave. Did people live here in the past?
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Very nice wild beach with translucent water and a splendid setting
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Marignane and its surroundings offer a diverse range of natural features. You can explore vast saltwater lagoons like the Étang de Berre and Étang de Bolmon, unique coastal strips such as the Lido du Jaï, and hilly areas like the Colline Notre-Dame. The region also features wetlands, marshes, springs, and even caves, providing a rich tapestry of ecosystems.
Yes, the wetlands and lagoons around Marignane are excellent for birdwatching. The Étang de Berre and Étang de Bolmon are crucial for local biodiversity, with flamingos often spotted. The Marshes of Palun are particularly noted for supporting 250 species of sedentary and migratory birds, offering exceptional ornithological visits. Further afield, the Réaltor Reservoir is a rich ornithological reserve where you can observe coots, grebes, swans, cormorants, and egrets.
For families, the Infernet spring offers a very simple and pleasant walk suitable for all ages. The Base des loisirs de l'Estéou is also perfect for families, providing numerous sports and leisure facilities, including a health course, cycling areas, and children's play areas in a natural setting.
The View of Étang de Berre from Plateau de Vitrolles offers beautiful trails with great views of the Étang de Berre. The Colline Notre-Dame, an 80-hectare 'green lung' of the city, also provides superb panoramic views of the surrounding area, including the Étang de Berre.
Absolutely. Many natural sites offer walking and hiking opportunities. For instance, the Calanque of the Salt Waters offers a very nice hike with a notable elevation gain. The Colline Notre-Dame has marked trails for exploration, and the Réaltor Reservoir features easily accessible trails for walking. You can find more hiking routes in the area by visiting the Hiking around Marignane guide.
The Mediterranean climate makes Marignane enjoyable for much of the year. Spring and autumn generally offer the most pleasant temperatures for outdoor activities like hiking and birdwatching, avoiding the intense heat of summer. These seasons also showcase the region's flora and fauna at their best.
Yes, the Colline Notre-Dame is notable for its geological outcrops from the Late Cretaceous period and also hosts a Gallo-Greek oppidum and a chapel, blending natural beauty with historical significance. The Cave with Two Entrances is another curious site that sparks questions about past human habitation.
Beyond hiking, the region offers various outdoor sports. The Base des loisirs de l'Estéou provides facilities for jogging and cycling. The Réaltor Reservoir has trails suitable for mountain biking or gravel biking. For more cycling options, check out the Cycling around Marignane guide, and for mountain biking, explore the MTB Trails around Marignane guide.
Visitors frequently praise the stunning views and serene natural settings. For example, the Jonquier Viaduct is loved for its very nice wild beach with translucent water and splendid setting, offering amazing panoramas. The trails with great views of the Étang de Berre are also highly appreciated by the komoot community.
Yes, the Lido du Jaï is a unique 6 km sandy coastal strip separating the Étang de Bolmon and Étang de Berre, ideal for naturalistic walks and observing diverse vegetation and birds. The Jonquier Viaduct is also associated with a beautiful wild beach. While not directly in Marignane, the stunning Calanques National Park, with its dramatic limestone cliffs and hidden coves, is easily reachable for a day trip.
The Marignane tourist office organizes guided nature walks. You can find details about these excursions, such as 'Randonnées nature chaque premier mercredi du mois' (Nature hikes every first Wednesday of the month), on their website: tourisme-marignane.com.


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