Ash Hollow State Historical Park is located five miles (8.0 km) south of Lewellen in Garden County, Nebraska.

The park comprises two attractions located 2.5 miles (4.0 km) from each other: Ash Hollow Cave and Windlass Hill.

[5] A spring in the vicinity of Ash Hollow Cave made it an attractive site for periodic human habitation.

Archaeological explorations of the cave have revealed that at least four distinct indigenous cultures occupied this area, during a period of more than 1,500 years.

The hill marked the entrance from the high table lands to the south into the Ash Hollow area and the North Platte River valley.