Which national park is located in Nebraska?

Scotts Bluff National Monument is the correct answer as it is a designated national monument located in Nebraska. This site features impressive geological formations and is significant for its historical role as a landmark for pioneers traveling the Oregon, California, and Mormon Trails during the westward expansion of the United States.

While Yellowstone National Park, Badlands National Park, and Rocky Mountain National Park are all well-known national parks, they are not located in Nebraska. Yellowstone is primarily in Wyoming; Badlands straddles South Dakota, and Rocky Mountain is found in Colorado. These distinctions highlight the unique status of Scotts Bluff as the notable site in Nebraska that is recognized for both its natural beauty and historical significance.