1901 Map of Gallatin

About this map

Lower Geyser Basin and the surrounding thermal landscapes are documented here during the late nineteenth-century surveying efforts led by Henry Gannett and J. H. Renshawe. The map captures a high-altitude wilderness defined by hydrothermal activity and volcanic geology, centered on the Gibbon River and Gardiner River drainages. Notable geological features such as the glass-like Obsidian Cliff and the thermal vents of Norris Geyser Basin illustrate the active landscape that drew early explorers and scientific expeditions.