Volcanic activity eons ago laid down this substantial granite deposit known as the Shonkin Sag Lacolith. Geologists Louis N. Pirrson and Walter H. Weed named the gray stone “Shonkinite” in 1894. I. E. Jenkins and W. H. Guyor began formal quarrying…

The Milwaukee Land Company laid out the neat, tree-lined streets of Square Butte in 1913. Strategically located along the Chicago, Milwaukee, St. Paul and Pacific’s route between Lewistown and Great Falls, Square Butte was for a time an important…

Christopher and Edward Wilson chose this narrow canyon as headquarters for their ranching operation in 1887. The brothers lived in a dugout while they built a more serviceable two-room cabin using granite hand-cut from the nearby hillside. By 1895,…