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2018 Map of Mammoth Mountain

Name: 2018 Topographic Map of Mammoth Mountain
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

Devils Postpile National Monument anchors the southwestern portion of this High Sierra landscape, protecting the distinct columnar basalt formation of the Devils Postpile. The terrain is defined by the high peaks of the Sierra Nevada, including Mammoth Mountain and San Joaquin Mountain, with the Middle Fork San Joaquin River carving a deep drainage through the center. The Pacific Crest National Scenic Trail traverses the western ridges, passing through alpine meadows and by high-elevation water bodies like Rosalie Lake and Shadow Creek.

Infrastructure is concentrated along the eastern edge near Mammoth Lakes, where Minaret Road provides access to the Minaret Summit and the descent into the river valley. The map documents a complex network of forest service roads and trails within the Inyo National Forest, serving recreation areas like Agnew Meadows and Pumice Flat. Volcanic features are prominent throughout the area, from the Inyo Crater Lakes to the aptly named Earthquake Dome.