Painted in 1903 along the rugged coastline of Anthéor on the French Riviera, this commanding oil on canvas captures Louis Valtat at a pivotal moment in his development, working in close dialogue with the emerging Fauvist sensibility that would soon reshape European painting. The fiery ochres and burnt siennas of the rocky coastline surge against vivid greens and blues, the paint applied with a confidence and chromatic intensity that places this work firmly within Valtat's most celebrated period. At 81 by 100 centimeters, the composition carries genuine physical presence, its warm Mediterranean light rendered not through atmospheric illusion but through bold, expressive color relationships that feel remarkably modern for their time. Valtat spent significant periods along the Esterel coast during these years, drawn repeatedly to the volcanic red porphyry formations that made Anthéor such an unusual and visually dramatic subject. This painting belongs to that sustained engagement with the landscape, translating the geological character of the site into something that feels almost tactile, the rocks given weight and heat through the sheer density of pigment. The work sits comfortably alongside comparable coastal studies that have appeared at major auction and in significant private collections, and collectors will note that it bears the artist's signature and maintains excellent condition in its unframed state, allowing full appreciation of the original canvas. Scholarly recognition of the work adds considerable weight to its appeal. The painting has been confirmed for inclusion in the forthcoming Catalogue Raisonné of Valtat's work, currently being prepared by the Association Les Amis de Louis Valtat, with formal notice of inclusion issued in December 2025. This documentation places the work within the definitive scholarly record of the artist's output, offering collectors both the aesthetic rewards of a genuinely beautiful early Fauvist canvas and the institutional confidence that rigorous provenance research provides.