In the Pont de Pierre quarry in La Colle sur Loup, a great evening event around light and video projection was organized. The specialty of this quarry is the manufacture of interlocking concrete blocks. Easily stackable, they are often used for the construction of retaining walls. For this evening two artists were invited: Jan Gulfoss – Artist photographer, musician and explorer. On the walls of the quarry, he projects 2 large video frescoes on the theme of nature. For our part, the Orpailleurs de Lumière, we projected our mapping on a monumental wall of concrete blocks. The theme chosen: the manufacture of blocks, called : Les sucres de béton.