Greater Yellowstone is 28 million acres spanning across the boundaries of three states in the heart of America's spectacular Rocky Mountains.

Our vision includes fully conserving six priority landscapes within Idaho, Montana and Wyoming. They are:

Idaho
South Fork Snake River 
Henry’s Fork

Montana
Centennial Valley 
Upper Madison

Wyoming
Greybull River Basin
    Pitchfork Ranch
Upper Green River Basin

The Nature Conservancy's Greater Yellowstone work in Idaho, Montana, and Wyoming.