Passage du Gois

The Passage du Gois is a submersible passage that links the island of Noirmoutier to the mainland in the Loire Region of France. The passage is approximately 4.150 km long and is uncovered twice a day, allowing for a period of 2 to 5 hours to cross, depending on the strength of the tide. The high tide covers the passage by 1.50 to 3 meters, depending on the coefficients. Crossing is possible 1 hour and 30 minutes before to 1 hour and 30 minutes after low tide. The passage has a rich history, with the first mention of it on a geographical map dating back to 1701. Over the years, the passage has undergone several changes, including the addition of balises, paving, and classification as a site of national interest. The passage is also known for its unique characteristic of being submerged by the sea several times a day, making it a popular spot for tourists and a challenging route for athletes who participate in the annual 'Foulées du Gois' race. The area is also renowned for its rich marine life, making it an ideal spot for fishing and shellfish gathering