Cliffs of the Upper Colorado River, Wyoming Territory by Thomas Moran

Thomas Moran painted "Cliffs of the Upper Colorado River, Wyoming Territory" in 1888, reflecting the Romantic vision of nature in its most sublime and majestic state. As one of the foremost artists of the Hudson River School, Moran specialized in capturing the vastness of the landscapes of the American West, employing light and color to emphasize the monumentality of the cliffs and the river. The scene depicted corresponds to the Green River Palisades (locally known as “The Palisades”), a series of striking cliffs with vertical jointing located along the Green River, just west of the city of Green River in Sweetwater County, Wyoming. These formations, among the most frequently photographed in the state, constitute a classic outcrop of the Green River Formation, of Eocene age, providing the work with a real geological foundation that Moran transforms into a compelling vision of the American landscape.

The very name “Palisades” refers to the appearance of these cliffs: the English word "palisade", derived from the French "palissade", denotes a defensive fence made of vertical stakes or posts. This is not a casual metaphor. The escarpments of the Green River, tall and sharply vertical, display straight, parallel forms that evoke a natural wall of stone pillars. Thus, for early explorers and settlers, these formations resembled a vast palisade, giving rise to the name “The Palisades.”

In this work, a palette of vibrant colors, combined with the masterful use of shadow, creates a dynamic interplay of contrasts that enhances the depth of the scene and underscores the mystical atmosphere of the landscape. Moran transcended conventional pictorial practice by transforming his work into a key instrument in the visual construction of the American West, where artistic representation and knowledge of the territory became inseparably intertwined. The composition balances the serenity of the river with the imposing presence of the cliffs, evoking both the immensity and the natural beauty of a land still to be explored.