Yellowstone Park, Mammoth Hot Springs

Thomas Moran's field sketch captures the dramatic geological formations of Mammoth Hot Springs with characteristic precision. Working in pen and ink on aged paper, Moran rendered the terraced mineral deposits and surrounding peaks through careful cross-hatching and linear detail. The annotation identifies the site and date, documenting Moran's direct observation during his travels through Yellowstone. A pioneering landscape artist of the American West, Moran produced such sketches as working studies for larger studio paintings, establishing visual conventions for depicting natural wonders that influenced American landscape art throughout the late nineteenth century.