Maurice Legendre was commissioned by the RATP to create a bas-relief to decorate the Grande Arche RER station at La Défense. The work is 3 meters high and 13 meters long. The aim was to compose a panorama of abstract forms, legible through a play on materials and surfaces in folded and welded copper sheet.

Unlike Boréale, located on the opposite quay, the work essentially emphasizes the vertical aspect of the elements rather than their horizontality. The work is located at the end of the platform, between tracks 2 and B, at the head of the train when the destination is Saint-Germain en Laye.

Maurice Legendre was born in Arcueil in 1928. From 1968 to 1983, he used the skills he had acquired at the École des Arts Décoratifs to create a number of monumental works that took on their full dimension in an urban context, particularly in the Paris region.