List of National Natural Landmarks in Washington

From List of National Natural Landmarks, these are the National Natural Landmarks in Washington. There are 18 in total.

	Name	Image	Date	Location	County	Ownership	Description
1	Boulder Park and McNeil Canyon Haystack Rocks		000000001986-01-01-00001986		Douglas	mixed- federal, state	The most illustrative examples of glacial erratics in the United States.
2	Davis Canyon		000000001986-01-01-00001986		Okanogan	mixed- state, private	One of the largest and least disturbed examples of antelope bitterbrush-Idaho fescue shrub steppe remaining in the Columbia Plateau.
3	Drumheller Channels		000000001986-01-01-00001986		Adams, Grant	mixed- federal, state, private	Illustrates the dramatic modification of the Columbia Plateau volcanic terrain by late Pleistocene catastrophic glacial outburst floods. Includes Columbia National Wildlife Refuge.
4	Ginkgo Petrified Forest		000000001965-01-01-00001965		Kittitas	state	Thousands of logs petrified in lava flows. Part of Ginkgo/Wanapum State Park.
5	Grand Coulee		000000001965-01-01-00001965		Grant	mixed- federal, state, private	An illustration of a series of geological events.
6	Grande Ronde Feeder Dikes		000000001980-01-01-00001980		Asotin	private	The best example of basalt dikes, the congealed feeder sources of the Columbia River basalt plateau.
7	Grande Ronde Goosenecks		000000001980-01-01-00001980		Asotin	federal	A 1,500-foot (460 m) deep canyon that follows a tortuous path along meanders.
8	The Great Gravel Bar of Moses Coulee		000000001986-01-01-00001986		Douglas	mixed- state, private	Largest and best example of a pendent river bar formed by catastrophic glacial outburst floods that swept across the Columbia Plateau.
9	Kahlotus Ridgetop		000000002011-01-01-00002011		Franklin	state	The best remaining example of the Central Palouse Prairie grassland subtheme.
10	Mima Mounds		000000001966-01-01-00001966		Thurston	state	A prairie containing unusual soil pimples of black silt-gravel.
11	Nisqually Delta		000000001971-01-01-00001971		Pierce, Thurston	mixed- federal, state, tribal, private	An unusually fine example of an estuarine ecosystem. INcludes Nisqually National Wildlife Refuge.
12	Point of Arches		000000001980-01-01-00001980		Clallam	federal	An outstanding exhibit of sea action in sculpturing a rocky shoreline. A unit of Olympic National Park.
13	Rose Creek Preserve		000000001984-01-01-00001984		Whitman	private	The best remaining example of the aspen phase of the hawthorne-cow parsnip habitat type in the Columbia Plateau. Managed by The Nature Conservancy.
14	Sims Corner Eskers and Kames		000000001986-01-01-00001986		Douglas	mixed- federal, state, private	The best examples in the Columbia Plateau of landforms resulting from stagnation and rapid retreat of the ice sheet during the last glaciation.
15	Steptoe and Kamiak Buttes		000000001965-01-01-00001965		Whitman	mixed- state, county, private	Isolated mountain peaks of older rock surrounded by basalt, rising above the surrounding lava plateau.
16	Umtanum Ridge Water Gap		000000001980-01-01-00001980		Kittitas	mixed- federal, state, private	Illustrates the geological processes of tectonic folding and antecedent stream cutting.
17	Wallula Gap		000000001980-01-01-00001980		Benton, Walla Walla	mixed- state, federal, county, municipal	The largest and most spectacular of several large water gaps through basalt anticlines in the Columbia River basin.
18	Withrow Moraine and Jameson Lake Drumlin Field		000000001980-01-01-00001980		Douglas	mixed- federal, private	The best examples of drumlins and the most illustrative segment of the only Pleistocene terminal moraine in the Columbia Plateau

References

• "Washington". National Natural Landmarks Program. National Park Service (U.S. Department of the Interior). Retrieved November 1, 2012.