1901 Map of Mt. Lyell

About this map

The High Sierra and the Mono Lake basin are captured here in a 1901 survey that predates much of the modern infrastructure in the region. The map emphasizes the hydrological network of the Yosemite National Park high country, tracing the headwaters of the Merced and Tuolumne rivers through sites like Merced Lake and Little Yosemite Valley. Beyond the granite peaks, the landscape transitions into the Mono National Forest and Sierra National Forest, defined by a series of high-altitude basins and meadows such as Starr King Meadow and Givens Meadow. Surveyed by R. B. Marshall and H. E. C. Feusier, the map documents the Mt Diablo Base Line and numerous county boundaries including the Tuolumne Co Mariposa Co Boundary Line. For researchers, the presence of localized features like Buck Camp and Gravelly Ford provides insight into the early stock-herding and patrol routes that once crisscrossed these mountain passes.