Special Resource Study: Z-Bar (Spring Hill) Ranch
NPS. 1991. Special Resource Study: Z-Bar (Spring Hill) Ranch
The Significance Study was conducted in accordance with established NPS planning processes and followed established criteria for determining significance. The Study addressed the natural and cultural resources of the ranch to determine whether they are, individually, or in combination, of sufficient significance to meet the criteria for potential inclusion as a unit of the National Park System. Included was a preliminary analysis of the site's eligibility as either a National Natural Landmark (NNL), or a National Historic Landmark (NHL).