Best natural monuments around Woignarue include impressive chalk cliffs, diverse coastal areas, and protected natural reserves. This commune in the Somme department of France offers varied landscapes and unique geological formations. Visitors can explore dynamic natural features and rich biodiversity. The region provides opportunities for observing wildlife and experiencing serene natural beauty.
Last updated: May 7, 2026
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The cliffs are made of chalk and are impressive to look at.
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Here in Ault begin the chalk cliffs, which stretch all the way to Normandy and repeatedly appear as enormous cliffs.
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The cliffs around the beach of Ault are composed of chalk from the Upper Cretaceous, more precisely from the Turonian and Coniacian (around 83 million years ago to 90 million years ago). They are strewn with flint nodules which highlight the subhorizontal stratification planes (the formation of flint has already been discussed in Discovery of the geology of the cliffs of Étretat, presentation of an excursion from the beach of Tilleul (Antifer) to the Porte d'Amont (Étretat Nord)). The relative proportion of chalk and flint is around 90-95% chalk to 5-10% flint. Flint horizons are stratigraphic markers. On the cliffs of Ault, the regular flint band called Seven Sisters is recognizable and characterizes the boundary between the Middle Coniacian and the Upper Coniacian (around 87 million years ago). The boundary between the lower and middle Coniacian is marked by the Shoreham 2 marl level, which is more difficult to identify. These lithostratigraphic markings allow in particular the correlation of distant deposits, such as between the Normandy and Picardy coasts, or between the French and English coasts.
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A green setting in the heart of the cliffs, classified as a picturesque area since 1959. The Bois de Cise is an exceptional natural area, a small natural forest, originally wild and abandoned, which became a famous seaside resort during the Belle Époque under the leadership of a visionary who stopped at nothing. This coastal forest was originally a wild forest and a hunting ground in the Middle Ages. At the end of the 19th century, the Bois de Cise was sold off in lots on the initiative of a property developer and became a famous seaside resort of the Belle Époque. Today, it is a charming holiday and walking area that is best explored on foot via the narrow paths and wooden steps that crisscross the area. Very beautiful villas bear witness to the prosperous years before the First World War. Don't forget to go to the panorama, like Victor Hugo in his time, a fantastic viewpoint from which you can see the mouth of the Bay of Somme.
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The cliffs around the beach of Ault are composed of chalk from the Upper Cretaceous, more precisely from the Turonian and Coniacian (around 83 million years ago to 90 million years ago). They are strewn with flint nodules which highlight the subhorizontal stratification planes (the formation of flint has already been discussed in Discovery of the geology of the cliffs of Étretat, presentation of an excursion from the beach of Tilleul (Antifer) to the Porte d'Amont (Étretat Nord)). The relative proportion of chalk and flint is around 90-95% chalk to 5-10% flint. Flint horizons are stratigraphic markers. On the cliffs of Ault, the regular flint band called Seven Sisters is recognizable and characterizes the boundary between the Middle Coniacian and the Upper Coniacian (around 87 million years ago). The boundary between the lower and middle Coniacian is marked by the Shoreham 2 marl level, which is more difficult to identify. These lithostratigraphic markings allow in particular the correlation of distant deposits, such as between the Normandy and Picardy coasts, or between the French and English coasts.
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The cliffs around the beach of Ault are composed of chalk from the Upper Cretaceous, more precisely from the Turonian and Coniacian (around 83 million years ago to 90 million years ago). They are strewn with flint nodules which highlight the subhorizontal stratification planes (the formation of flint has already been discussed in Discovery of the geology of the cliffs of Étretat, presentation of an excursion from the beach of Tilleul (Antifer) to the Porte d'Amont (Étretat Nord)). The relative proportion of chalk and flint is around 90-95% chalk to 5-10% flint. Flint horizons are stratigraphic markers. On the cliffs of Ault, the regular flint band called Seven Sisters is recognizable and characterizes the boundary between the Middle Coniacian and the Upper Coniacian (around 87 million years ago). The boundary between the lower and middle Coniacian is marked by the Shoreham 2 marl level, which is more difficult to identify. These lithostratigraphic markings allow in particular the correlation of distant deposits, such as between the Normandy and Picardy coasts, or between the French and English coasts.
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The region around Woignarue offers a diverse range of natural monuments, primarily featuring impressive white chalk cliffs, expansive coastal areas, and protected natural reserves. You can find dynamic geological formations, diverse marine and bird habitats, and serene natural beauty.
For breathtaking panoramic views, you should visit Cape Hornu, which provides stunning vistas of the Bay of Somme. The Ault Chalk Cliffs also offer dramatic scenery from their clifftops, marking the beginning of the Côte d'Opale.
Yes, Cape Hornu is noted as family-friendly, offering a path along the coast with views of the Bay of Somme and its wildlife. The Hâble d'Ault, a protected natural area, is also excellent for birdwatching and observing migratory birds, which can be a peaceful family activity.
The natural areas around Woignarue are rich in wildlife. The Hâble d'Ault is known for its diverse bird species, making it a prime spot for birdwatching. Additionally, the Pointe du Hourdel, about 13 kilometers away, is significant for its seal colony, offering a chance to witness marine life in its natural habitat.
The cliffs, such as La Cise Cliff and the Ault Chalk Cliffs, are composed of Upper Cretaceous chalk (Turonian and Coniacian periods, 83 to 90 million years ago). They are interspersed with flint nodules that highlight their subhorizontal stratification. These cliffs are dynamic, receding about 30 cm per year due to erosion, showcasing a unique example of coastal geological processes.
Yes, there are numerous opportunities for outdoor activities. For cycling, you can explore routes like the 'Strada biancha Picarda – Le Hourdel Lighthouse loop from Ault' or 'Le Tréport Harbor – Ault Chalk Cliffs loop from Ault'. Mountain biking options include routes like 'Cape Hornu – Le Hourdel Lighthouse loop from Woignarue'. You can find more details on these and other routes in the Road Cycling Routes around Woignarue, Gravel biking around Woignarue, and MTB Trails around Woignarue guides.
The Hâble d'Ault is a protected natural area north of Onival, partially within Woignarue. It was once part of the ancient Somme Bay and is now primarily marshy, grass-covered sedimentary terrain. It's highly recommended for birdwatching due to its rich diversity of bird species, especially migratory ones. The 'White Route of the Bay of Somme' offers excellent opportunities to observe wildlife, including seals and birds, near the beach.
Cape Hornu has a rich history tied to Saint-Valery-sur-Somme. Its name comes from the Picard word for 'horned' or 'pointed'. The area is historically significant, with connections to William the Conqueror's departure for England in 1066 and Joan of Arc's imprisonment in 1431. The monk Gualaric (Saint Valery) also established a hermitage here in 611, leading to the foundation of an abbey.
Visitors particularly appreciate the dramatic scenery and geological significance of the chalk cliffs, such as the Ault Chalk Cliffs and La Cise Cliff. The panoramic views of the Bay of Somme from spots like Cape Hornu are also highly rated. The region's diverse marine and bird habitats, offering opportunities for wildlife observation, are also a major draw.
The best time to visit depends on your interests. For birdwatching, spring and autumn are ideal due to migratory patterns in areas like the Hâble d'Ault and the Bay of Somme. For enjoying the coastal paths and views, the warmer months from late spring to early autumn offer pleasant weather. However, the dramatic cliffs are impressive year-round, though coastal erosion is more pronounced during stormy periods.
While popular sites like the Ault Chalk Cliffs attract many, exploring the broader Réserve naturelle de la Baie de Somme (Bay of Somme Natural Reserve) can offer vast and varied landscapes where you can find serene natural beauty away from the main crowds. The Hâble d'Ault also provides a peaceful setting for birdwatching without disturbance.
Yes, there are options for easier exploration. The 'White Route of the Bay of Somme' is a paved track along the coast, offering accessible opportunities to observe wildlife. For cycling, some routes are rated 'easy', such as the 'Lighthouse far away from the beach – Hourdel Beach and Hourdel Point loop from Woignarue' found in the MTB Trails around Woignarue guide, which can often be adapted for walking.


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