The Beryl Spring on the Road from the Lower Basin to Norris

Thomas Moran's sketch captures a geothermal feature in Yellowstone National Park with characteristic precision. The composition combines topographical observation with atmospheric effect—steam rises from the mineral-rich spring while the surrounding terrain renders in careful cross-hatching and line work. Moran's hand-drawn annotations identify geological formations and directional markers, revealing the working method of a landscape artist who synthesized field notes with finished compositions. This sketch demonstrates the nineteenth-century practice of on-site drawing as documentation, merging scientific interest with aesthetic exploration of the American West.