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1981 Map of Black Rock Mtn

Name: 1981 Topographic Map of Black Rock Mtn
Creator: U.S. Geological Survey
Published: 1981
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1981

About this map

Six Rivers National Forest and Trinity National Forest converge in this high-altitude landscape of Trinity County, where narrow ridges and deep gulches define the topography. The 1981 survey reveals a territory primarily managed for natural resources, featuring the Bonanza Mine and Lucky Sunday Mine tucked into the steep slopes of Van Horn Ridge. The presence of these operations alongside the Lookout Tower on a prominent peak illustrates the dual history of extraction and forest management in the region.

Water plays a critical role in the land's character, with the South Fork Trinity River and the Mad River serving as primary drainage points. Named landmarks like Tombstone Rock and Penney Glades offer specific points of reference for those tracing historical backcountry routes. The southeastern portion of the map transitions into the Yolla Bolly - Middle Eel Wilderness, highlighting the area's role as a protected high-country environment.