3 . Passage du Gois is a natural road located on the Atlantic coast of France in Vendée. The 4,150-meter-long road, which leads from the mainland to the island of Noirmoutier, is covered with water twice a day during high tide (潮). If you have mixed up the time of the tide, the only way out is a boat. The road can be used just at low tide.

It is only an hour and a half before the lowest water level and an hour and a half after it. In order to drive along this road, you need to know the time of the tides. In any case, follow the advice on the electric boards placed on both ends of the road, and you will know whether it is passable or not. Although it is forbidden (禁止) by law, in very bad cases, you can stay on the coastline. It is strictly forbidden to park a car on the sidewalk. To avoid slipping (滑) sideways, you need to drive slowly.

Trucks and buses can cross the road only from the mainland to the island. At high tide, from 1.3 to 4 meters of water covers the road. After high tide, the road becomes wet and slippery because of the algae (水藻) that remain on it. When this passage is littered with algae, it may be dangerous to cross.

This area is very often covered with thick fogs (雾), so it is better to wait for the low water on the land. This road was first used in the 16th century, and gradually became covered with silt (sand, dirt, and very small rocks). This road was even used several times for the Tour de France (a well-known bicycle race). Today, thousands of tourists come here every year to watch how the road goes underwater twice a day and then reappears. It is so special that you will never find the same one anywhere else in the world!