National Monuments
A number of national monuments have been established in various grasslands regions of the US. For example, Scotts Bluff National Monument protects the distinctive, eponymous sedimentary butte that rises out of the mixed-grass prairie of the Nebraska plains and that served as an important landmark to travelers along the 19th-century emigrant roads. A different grassland partly comprises eastern Washington’s Hanford Reach National Monument: the semi-arid bunchgrass steppe of the Columbia Plateau, set in a mosaic with sagebrush-dominated scrub.