Nebraska is a state located in the central part of the United States. It is bordered by South Dakota to the north, Iowa to the east, Missouri to the southeast, Kansas to the south, Colorado to the southwest, and Wyoming to the west. To the northeast, Nebraska shares a border with the state of Iowa, and to the northwest, it borders the state of Wyoming.

Fort Niobrara National Wildlife Refuge is located in Nebraska and includes 19,131 acres (77.42 km2). Fort Niobrara NWR will strive to preserve, restore, and enhance the exceptional diversity of native flora and fauna and significant historic resources of the Niobrara River Valley and Sandhills of Nebraska for the benefit of present and future generations of Americans.

The Ashfall Fossil Beds are among the rare preservation sites called lagerstätten.

Chimney Rock is a prominent geological rock formation in Morrill County in western Nebraska. Rising nearly 300 feet above the surrounding North Platte River valley.