caption: The image shows a poster with a diagram of the tableau poleometrique, which is a geological map of the area. The diagram is composed of a series of concentric circles, each representing a different geological formation. The circles are labeled with the names of the different geological features, such as mountains, rivers, and valleys. The colors used in the diagram are mostly shades of blue, green, and yellow, with some hints of red and orange. The poster also includes a legend that explains the meaning of each color.