This 640-acre forest was established in 1931 to determine which types of trees would do well in the northern Great Plains. Here, trees and shrubs are all labeled and planted in a park-like setting. Visitors can backpack along the Skyline Trail, which winds through stands of ponderosa pine, sand dunes and rough terrain. Recreation includes hunting for deer and sharp-tailed grouse, hiking, berry-picking and cross-country skiing. Birdwatchers should look for pine warblers and black-backed three-toed woodpeckers.