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[]: 2
[Name]: Fort Rock State Monument
[Image]:
[Date]: 1976
[Location]: 43°22′19″N 121°04′26″W / 43.372°N 121.074°W / 43.372; -121.074 (Fort Rock)
[County]: Lake
[Ownership]: state park
[Description]: Volcanic tuff ring -
[]: 8
[Name]: Mount Howard-East Peak
[Image]:
[Date]: 2016
[Location]: 45°15′40″N 117°10′44″W / 45.260987°N 117.178778°W / 45.260987; -117.178778 (Mount Howard-East Peak)
[County]: Wallowa
[Ownership]: federal
[Description]: Contains botanically diverse montane grassland habitats and populations of endemic and rare plant species. -
[]: 11
[Name]: Zumwalt Prairie
[Image]:
[Date]: 2013
[Location]: 45°32′N 117°05′W / 45.54°N 117.09°W / 45.54; -117.09 (Zumwalt Prairie)
[County]: Wallowa
[Ownership]: private
[Description]: Largest contiguous remaining tract of bunchgrass prairie in the nation. -
[]: 7
[Name]: Newberry Crater
[Image]:
[Date]: 1976
[Location]: 43°41′21″N 121°15′18″W / 43.689194°N 121.254889°W / 43.689194; -121.254889 (Newberry Volcano)
[County]: Deschutes
[Ownership]: federal
[Description]: Atypical shield volcano in Deschutes National Forest. -
[]: 5
[Name]: The Island
[Image]:
[Date]: 2011
[Location]: 44°33′31″N 121°16′38″W / 44.558489°N 121.277143°W / 44.558489; -121.277143 (The Island)
[County]: Jefferson
[Ownership]: federal
[Description]: Native juniper savanna on an isolated plateau at the confluence of the Deschutes and Crooked Rivers. Part of Ochoco National Forest. -
[]: 3
[Name]: Horse Ridge Natural Area
[Image]:
[Date]: 1967
[Location]: 43°55′26″N 121°02′20″W / 43.924°N 121.039°W / 43.924; -121.039 (Horse Ridge)
[County]: Deschutes
[Ownership]: federal
[Description]: Western juniper woodland on Bureau of Land Management property.
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