
Mendocino National Forest defines the rugged topography of this North Coast Range landscape, where the tri-county boundary of Trinity, Mendocino, and Tehama meets. The northern reaches are preserved within the Yolla Bolly Middle Eel Wilderness, characterized by high-elevation landforms like Hammerhorn Ridge and the prominent Little Buck Rock. Human presence is marked by isolated mountain outposts and seasonal gathering spots such as Pony Meadows and Slanes Flat, accessible via the historic French Trail and specialized forest routes. Water sources are critical in this high-country terrain, evidenced by several glade springs, including Tantrum Glade Spring and Minnie Glade Spring, which feed into steep drainage systems like Thomes Creek and McClure Creek. This survey captures the wilderness character of the area before modern fire regimes and management shifts altered the dense forest cover surrounding Hammerhorn Lake and Howard Lake.
42 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1890 · Red Bluff
USGS Topo · 1:250,000
1894 · Red Bluff
USGS Topo · 1:250,000
1926 · Covelo
USGS Topo · 1:62,500
1931 · Hoaglin
USGS Topo · 1:96,000
1935 · Hoaglin
USGS Topo · 1:125,000
1952 · Covelo
USGS Topo · 1:62,500
1952 · Anthony Peak
USGS Topo · 1:62,500
1953 · Blackrock Mtn
USGS Topo · 1:62,500
1954 · Blackrock Mtn
USGS Topo · 1:62,500
1954 · Yolla Bolly
USGS Topo · 1:62,500