ELI5: Explain Like I'm 5

Saint-Louis-Arzviller boat lift

Have you ever seen an elevator? It's like a small room that can go up and down a tall building. Well, the Saint-Louis-Arzviller boat lift is similar to an elevator but for boats!

In France, there is a big river called the Marne-Rhine Canal that connects two different rivers. To make it easier for boats to travel from one river to the other, engineers built a boat lift that can lift boats up and down the 44.5-meter hill.

This boat lift is like a big bath tub that can fit up to four boats at once. When a boat enters the "bath tub," it is lowered down into a big water tank at the bottom of the hill. Once it's at the bottom, the boat can exit and continue on its journey.

When a boat needs to go up the hill, it enters the "bath tub" again and it's lifted up by a hydraulic system. The boat lift uses a lot of water to move boats up and down, so it's very important to conserve water and be careful not to waste it.

Overall, the Saint-Louis-Arzviller boat lift is a very cool and helpful invention that makes it easier for boats to travel long distances without having to go around the hill.