Loading map...

1959 Map of Nabesna A-5

Name: 1959 Topographic Map of Nabesna A-5
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

Nabesna Glacier and the massive Jacksina Glacier dominate this mid-century topographic study, which captures the raw glacial hydrology of the eastern Alaska Range. Flowing from these high ice fields, the Jacksina Creek carves a deep valley northwards, joined by tributaries like Mesa Creek and Monte Cristo Creek. The landscape is defined by extreme elevation changes near Mt Gordon, where steep contours reveal a complex network of ridges and drainage basins.

Evidence of human passage is minimal and strictly functional, marked by a Pack Trail that skirts the western shore of Grizzly Lake. This trail serves as a vital connection through the valley, navigating the interface between the high alpine tundra and the active glacial margins. The mapping by the U.S. Geological Survey, based on 1952 aerial photography, provides a precise look at the ice extent and drainage patterns before later twentieth-century environmental shifts altered these perennial snowfields.