Have you ever played a game where you have to dig for treasure? Mining maquis is kind of like that, but instead of digging for treasure, people are digging in the ground to find a special kind of rock called maquis.
Maquis is a rock that has some special things inside of it that people think are very valuable. But the thing is, not all maquis rocks have those valuable things inside of them. So, people have to dig a lot of rocks before they find one that has the good stuff.
To do this, people use big machines called excavators to dig up the rocks from the ground. Then, they bring the rocks to a place where they can look at them more closely. If they see that there might be valuable things inside the rock, they will break it apart to see what's inside.
If they find something valuable, like gold or silver, they will sell it to other people who want to use it for things like making jewelry or electronics.
But it's not easy to find the valuable stuff in maquis rocks. People have to work very hard and dig up a lot of rocks to maybe find something valuable. It's kind of like playing a game where you have to keep digging and digging until you find the treasure!