The IGN TOP 25 hiking map No. 1430 OT covers the following area: Rochefort & Marennes.
- Contour lines at 10-metre intervals.
- Detailed legend: vegetation, rocks, watercourses and more.
- Hiking trails are shown.
- Scale: 1:25,000 (1 cm = 250 m).
Municipalities covered: Châtelaillon-Plage, Fouras, Rochefort, Île-d'Aix, Yves, Marennes-Hiers-Brouage, Champagne, Saint-Jean-d'Angle, Ballon, Ciré-d'Aunis, Beaugeay, Moëze, Saint-Agnant, Soubise, Trizay, Saint-Froult, Échillais, Bourcefranc-le-Chapus, Saint-Hippolyte, Saint-Laurent-de-la-Prée, Port-des-Barques.
Places to discover: Rade des Basques, Île Madame, Côte de Piédemont, Pointe de la Fumée, Pointe St-Clément, Aix Island, Gataudière Castle, Croix Hosannière, Marais d'Yves Nature Reserve, Fort Louvois, Maison de Pont Loti.