This landscape painting by Thomas Moran is of the banks of Green River, Wyoming with Castle Rock Point standing tall towards the center right of the background. There is a faint rainbow glowing behind Castle Rock with strong sunlight coming from the left side of the canvas, implying a storm behind the towering cliff that is the central focus of the painting. Although born in Britain, Moran is considered an important American artist for his paintings of the western wilderness, especially Yosemite Valley. Three of Moran's western landscapes are in the White House Collection.