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2023 Map of Tworoose Pass

Name: 2023 Topographic Map of Tworoose Pass
Creator: U.S. Geological Survey
Published: 2023
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2023

About this map

Upper Stillwater Reservoir anchors this high-elevation landscape within the Ashley National Forest, where the managed waters of Rock Creek descend through deep glacial valleys. The map illustrates a complex drainage system reaching into the High Uintas Wilderness, defined by peaks like Brown Duck Mtn and East Grandaddy Mtn. A network of historic routes, including the Tworoose Pass Trl and Dry Ridge Trl, connects the various basins and alpine lakes such as Mid Lake and Rudolph Lake.

Geological depressions and family-named landmarks suggest a history of seasonal use and early exploration. Features like Sinowauvf Basin and Hell Hole sit alongside numerous water sources such as Horsehair Spring and Rock Spring, which were vital for traversing this high-country terrain. The detailed topography reveals the transition from the steep ridges of Burnt Ridge to the protected flats of Brown Duck Basin.