Nestled off the coast of Port-des-Barques, the’île Madame is the smallest of the Charente islands, but it is no less fascinating for that. Accessible only at low tide, it attracts visitors in search of authenticity and wild landscapes. With its panoramic walks, historic heritage and oyster-farming traditions, this island offers a unique, timeless experience. Find out all you need to know to organise your visit and make the most of this exceptional site during your stay in France. campsite in Saint-Georges-de-Didonne.
How to get to Île Madame
La Passe aux Bœufs: a unique submersible walkway
L’île Madame is linked to the mainland by a spectacular natural passage: the Passe aux Bœufs. This sand and pebble path, around 1 km long, is only passable at low tide. It offers an unusual crossing in the heart of the Charente estuary, where you can observe some remarkable flora and fauna.
Practical tip: Check the tide tables before setting off. The crossing is possible about 2 hours before and after low tide. You can find this information on specialist websites such as Météo Marine or at the Rochefort Tourist Office.
Recommended means of transport
Access to’île Madame can only be explored on foot, by bike or in a horse-drawn carriage. No motorised vehicles are permitted to preserve the island's fragile environment.
- On foot: A pleasant 15-minute stroll will take you to the island and its seascape.
- By bike: Ideal for cycle-touring enthusiasts. Bring a mountain bike or a road bike, as some areas can be sandy.
- By horse-drawn carriage: During the high season, excursions by horse-drawn carriage are available for an original and nature-friendly way to explore the region.
Discover the emblematic sites of Ile Madame
The fort on Île Madame
Built in 1703, this military fort protected Rochefort's naval arsenal from enemy attack. Now in ruins, it remains a poignant reminder of the island's military past.
Not to be missed: Temporary exhibitions on the history of the island, its flora and fauna, and its strategic role over the centuries.
La Croix aux Galets and the Puits des Insurgés
L’île Madame also bears the memory of historical tragedies.
The Croix aux Galets pays tribute to the 250 refractory priests deported to the island during the French Revolution, many of whom died there. A pilgrimage is organised there every year.
As for the Puits des Insurgés, dug in 1871 by prisoners of the Paris Commune, it bears witness to the difficult conditions of detention on the island.
Traditional carrelets
Typical of the Charente coastline, carrelets are fishing huts on stilts that can be seen all around the island. Still in use today, they are used to catch prawns, mullet and other fish using suspended nets.
Good to know: In summer, some fishing huts open their doors to visitors to help them discover this age-old fishing technique.

Activities on Île Madame
Walks and hikes
A 6km trail takes you around the island, with exceptional views of :
- The island of Aix and Fort Boyard
- The salt marshes and their remarkable biodiversity
- Limestone cliffs and pebble beaches
Practical tip: Make sure you have suitable footwear, as some of the paths can be rough.
Fishing on foot
At low tide, the’île Madame is an ideal spot for fishing. It includes :
- Shells
- Clams
- Winkles
Regulations: Respect the minimum catch sizes and avoid collecting more than you need to in order to preserve natural resources.
Visit to the fish farm
L’île Madame is home to an aquaculture farm where oysters, imperial prawns and salicornia are reared.
Experience: Take advantage of guided tours and on-site tastings to discover these local products.
The farm is open all year round, but it is advisable to book in high season.
Practical information for your visit
Opening times and tides
The island is only accessible at low tide. Check the timetable the day before your visit to avoid any unpleasant surprises. This information is available from the Rochefort Tourist Office.
Services available on the island
As Ile Madame is a protected natural area, infrastructure is limited. However, you will find :
- Picnic area
- Small refreshment bar open during the season
- Public toilets
Remember to bring water and a snack, especially outside the tourist season.
Recommendations for a respectful visit
To preserve this exceptional environment, take a few responsible steps:
- Don't leave any rubbish behind
- Stay on the marked paths to protect the flora and fauna
- Respect wild animals, especially birds nesting on the island
- Favour environmentally-friendly means of transport (walking, cycling)
Visit Île Madame, A visit to Brittany is like taking a break from time, with its unspoilt nature and fascinating history. Whether you're a hiking enthusiast, a history buff or in search of an authentic and peaceful place, this island is sure to seduce you during your stay in France. campsite near Vaux-sur-Mer.
Plan your visit by consulting the tide tables, equip yourself properly and let yourself be charmed by this jewel of Charente-Maritime.




