Ash Hollow State Historical Park: Type area for the Ash Hollow Formation (Miocene), western Nebraska
R. F. Diffendal, Jr., 1987. "Ash Hollow State Historical Park: Type area for the Ash Hollow Formation (Miocene), western Nebraska", North-Central Section of the Geological Society of America, Donald L. Biggs
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Ash Hollow State Historical Park, administered by the Nebraska Game and Parks Commission, is located primarily in Sec. 3, N½, Sec. 10, and the E½NE¼Sec.22, T.15N., R.42W. (Fig. 1), Garden County, Nebraska. The park and adjacent lands are shown on the Lewellen and Ruthton 7½ -minute Quadrangles; scale 1:24,000. U.S. 26 passes through the park. This highway and other paved roads provide access from 1-80. A camping area and a museum with excellent interpretive displays are located in the park.
Rock exposures are easily accessible by foot in the park and at road cuts along U.S. 26 and nearby county roads. No collecting of specimens is permitted in the park, but samples may be collected from road cuts. Fossils found by people in and near the park have been added to the museum collections. Poison ivy can be found in abundance in some parts of the area. Rattlesnakes may live anywhere in this part of Nebraska.