Ardif worked for several weeks with students from the high school Joliot-Curie. They chosed the animals for the composition and the building of Nanterre integrated in the mechanical parts. They also helped him during the process of the wall painting.
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This project was also in collaboration with the Louvre museum and the Nanterre city council.
The lion and the frog are like a fable telling the story of the people of Nanterre.