During a real «road movie», they meet various interlocutors who explain their views on these images, including physicists who explain the techniques used to analyze and date them. But, in many ways, these representations are also very timely: what do the Amerindians who live in the region today have to say about them? Is it a coincidence that the first works of «Land Art» were created in the landscapes that their ancestors had occupied and animated? And how do these prehistoric images inspire contemporary artists?