
Ginkgo Petrified Forest State Park anchors the eastern edge of this 1950s terrain, where the Columbia River forms the boundary between Kittitas and Grant Counties. The landscape is defined by a series of deep erosional features typical of the region, including Rock Coulee, Schnebly Coulee, and Ryegrass Coulee. These landforms cut through the volcanic basalt layers of the high desert, reaching toward Ryegrass Mountain and the prominent Hult Butte.
14 named features on this map. Tap any name to fly to it.
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3 editions found
1909 · Quincy
USGS Topo · 1:62,500
1910 · Quincy
USGS Topo · 1:62,500
1912 · Beverly
USGS Topo · 1:62,500
1920 · Colockum Pass
USGS Topo · 1:125,000
1922 · Colockum Pass
USGS Topo · 1:125,000
1939 · Boylston
USGS Topo · 1:48,000
1943 · Boylston
USGS Topo · 1:62,500
1950 · Yakima
USGS Topo · 1:250,000
1953 · McDonald Spring
USGS Topo · 1:24,000
1953 · Ginkgo
USGS Topo · 1:24,000