
Klopp Placer Mine and Thornburg Placer Mine reveal the historic mineral extraction and hydraulic activity that once defined this portion of the Blue Mountains. Located at the boundary of Umatilla National Forest and Wallowa-Whitman National Forest, the landscape is characterized by deep drainage systems like Wagner Gulch and the dramatic North Fork John Day River Canyon.
30 named features on this map. Tap any name to fly to it.
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3 editions found
1901 · Sumpter
USGS Topo · 1:125,000
1951 · Desolation Butte
USGS Topo · 1:62,500
1953 · Pendleton
USGS Topo · 1:250,000
1955 · Canyon City
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1959 · Canyon City
USGS Topo · 1:250,000
1965 · Limber Jim Creek
USGS Topo · 1:24,000
1965 · Fly Valley
USGS Topo · 1:24,000
1967 · Tower Mtn
USGS Topo · 1:24,000
1972 · Trout Meadows
USGS Topo · 1:24,000