
Cowhorn Mountain stands as a central peak at the intersection of the Cascade Range and the Calapooya Mountains, where the borders of three national forests converge. The landscape is defined by its complex drainage and glaciated basins, feeding a dense network of high-elevation water bodies including Indigo Lake, Summit Lake, and the western reaches of Crescent Lake. These alpine lakes are connected by a historical network of paths, most notably the Pacific Crest National Scenic Trail as it traverses the High Divide and Windy Pass. The presence of numerous seasonal trails like Summit Lake Run and the Metolius-Windigo loop highlights the area's role as a primary corridor for wilderness travel. Geographic markers such as Bingham Meadow and Crater Butte provide distinct landmarks for those tracing the traditional boundary lines between the Willamette National Forest, Deschutes National Forest, and Umpqua National Forest.
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This is the sole edition of this map. No revisions or reprints were ever made.
1917 · Diamond Lake
USGS Topo · 1:125,000
1925 · Waldo Lake
USGS Topo · 1:125,000
1930 · Maiden Peak
USGS Topo · 1:125,000
1934 · Maiden Peak
USGS Topo · 1:125,000
1935 · Chemult
USGS Topo · 1:96,000
1941 · Chemult
USGS Topo · 1:125,000
1955 · Crescent
USGS Topo · 1:250,000
1956 · Waldo Lake
USGS Topo · 1:62,500
1956 · Summit Lake
USGS Topo · 1:62,500
1957 · Crescent
USGS Topo · 1:250,000