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1953 Map of Blackrock Mtn

Name: 1953 Topographic Map of Blackrock Mtn
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

Six Rivers National Forest and Mendocino National Forest converge in this mid-century study of the high Trinity divide. The landscape is defined by the steep drainage basins of the South Fork Trinity River and the multiple forks of the Eel River, which carve through deep ridges and glades. Evidence of early interior travel is preserved in the Humboldt Trail, while several remote outposts like Double Cabins and Blossom Cabin are already noted as ruins by this time.

Resource extraction is concentrated in the western reaches, where the Bonanza Mine, Lucky Sunday Mine, and Bluey Mine mark historical mining activity. The map captures a transition toward conservation and wilderness management, centered on the Yolla Bolly-Middle Eel Wilderness Area. For researchers, the presence of family-named sites like Travis Ranch and Vann Cabin alongside numerous forest service camps such as Police Camp and Saddle Camp provides a detailed view of the era's backcountry occupancy.