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2001 Map of Horseshoe Basin

Name: 2001 Topographic Map of Horseshoe Basin
Creator: U.S. Geological Survey
Published: 2004
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2004

About this map

Horseshoe Basin sits along the high international border between Washington and British Columbia, where the Okanogan National Forest transitions into the protected Pasayten Wilderness. This high-altitude landscape is defined by its glacial cirques and alpine summits, including Armstrong Mountain and Arnold Peak. The map documents a network of primitive access points and pack routes necessary for navigating the Cascades, such as the Boundary Trail and the Albert Camp Trail, which converge near high-elevation landmarks like Sunny Pass.

Tracing the headwaters of the Middle Fork Pasayten River reveals a complex drainage system fed by Loudon Lake, Smith Lake, and numerous seasonal creeks. Cultural markers of backcountry usage are visible at Iron Gate and the oddly named Pick Pocket, while lower elevations provide grazing areas like Hodges Horse Pasture and Deer Park. This survey reflects the region's character as a preserved frontier at the start of the 21st century.