Zumwalt Prairie in northeast Oregon designated National Natural Landmark

The Nature Conservancy manages its day-to-day work on it preserve on the Zumwalt Prairie from this old ranch house Oregon's Zumwalt Prairie has been added to the National Natural Landmark system by the National Park Service.

http://www.oregonlive.com/travel/index.ssf/2013/04/zumwalt_prairie_in_northeast_o.html