
Thirtymile Cr carves a winding path through this corner of Gilliam County, anchoring a landscape defined by an intricate network of drainage systems and high ridges. The area is marked by a deep-seated geography of canyons, including the central Schott Canyon and the evocatively named Coffin Canyon and Yellow Dog Canyon. These natural corridors have long dictated movement through the region, as seen in the placement of Sniption Canyon Rd and Armstrong Canyon Rd, which trace the base of the steep terrain.
39 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.
1916 · Condon
USGS Topo · 1:125,000
1953 · The Dalles
USGS Topo · 1:250,000
1956 · The Dalles
USGS Topo · 1:250,000
1957 · The Dalles
USGS Topo · 1:250,000
1970 · Igo Butte
USGS Topo · 1:24,000
1970 · Schott Canyon
USGS Topo · 1:24,000
1970 · Chimney Springs
USGS Topo · 1:24,000
1970 · Condon
USGS Topo · 1:24,000
1970 · Buckhorn Canyon
USGS Topo · 1:24,000
1970 · Fossil North
USGS Topo · 1:24,000