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1991 Map of Sylvan Lake

Name: 1991 Topographic Map of Sylvan Lake
Creator: U.S. Geological Survey
Published: 1996
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1996

About this map

Signal Hills and the surrounding peaks of the North Absaroka Wilderness dominate this high-elevation landscape within Yellowstone National Park. The terrain is defined by extreme vertical relief, including the 10,000-foot summits of Mount Doane and Mount Stevenson. The survey captures the transition between the park’s volcanic geomorphology and the adjacent Shoshone National Forest, marked by the presence of several Thermal Areas and the deep depression of Brimstone Basin.

Hydrographic features are central to the map's layout, ranging from the vast waters of the Southeast Arm Yellowstone Lake in the southwest to the secluded Sylvan Lake near the northeastern Wilderness Boundary. Transportation is limited to the East Entrance Road cutting through Sylvan Pass and the Thorofare Trail, which tracks along the lakeshore, illustrating the preserved character of this backcountry at the start of the 1990s.