
Klopp Placer Mine and the Thornburg Placer Mine stand as evidence of the mineral extraction history along the North Fork John Day River in this part of eastern Oregon. This 1995 survey highlights a landscape managed by overlapping jurisdictions of the Umatilla National Forest and the Wallowa-Whitman National Forest. The complex drainage network is defined by high-elevation terrain like White Pine Knob and Trout Meadows Butte, where numerous Spring and Springs labels feed into Blue Meadow Creek and Davis Creek. The presence of numerous Drill Holes scattered across the northern sections suggests ongoing geological exploration or resource assessment during the late 20th century. Remote access is facilitated by the Packsaddle Trail and various unpaved roads, connecting isolated locations like Happy Prairie and the meadowlands of Cabell Meadow.
31 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.
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