Two granite boulders inscribed with thunderbird figures are exhibited at Writing Rock State Historic Site north of Grenora in Williams County. The designs on the rocks are clearly American Indian, despite unfounded speculation attributing the origins of the “mysterious carvings” to Vikings, Chinese, or others. Similar rock art sites are found in Roch Percée and Kamsack, Saskatchewan; Long-view and Writing-on-Stone Provincial Park, Alberta; Pictograph Cave near Billings, Montana; Dinwoody, Wyoming; Ludlow Cave, South Dakota; and at numerous archeological sites in the upper Midwestern United States.
Thunderbirds, mythological creatures responsible for lightning and thunder, are central to stories told by Algonquian and Siouan-speaking tribes. Many Plains Indians such as the Plains Cree, Plains Ojibwa, Gros Ventre, Crows, Dakotas (Sioux), Mandans, and Hidatsas used thunderbirds in their art. The design appears on prehistoric artifacts such as shell and bone pendants and pottery, as well as on rock art. Most of these artifacts on the northern plains date from A.D. 1000 to A.D. 1700.
The larger of the two granite boulders measures four and one-half feet high and four feet wide. A massive, flying bird surrounded by interconnected lines and circles covers the flattest side of the boulder. The second, smaller rock is three and one-half feet long, two feet wide, and one and one-half feet high. It displays a smaller, flying bird connected to circles and abstract lines. A second bird, which is missing its head, flies above the other designs. All of the motifs were pecked by pounding a hard rock against the boulders or were ground into the surfaces.
The smaller rock was originally located some distance from the larger one and was once removed from the site but later returned. Today, the two boulders are enclosed in a shelter and protected by iron bars at the historic site. Recreational facilities at the historic site include picnic tables in a grove of trees, picnic shelters, a building with a kitchen, fireplace, playground equipment, restrooms, and a parking lot.
612 East Boulevard Ave.
Bismarck, North Dakota 58505
Museum Store: 8am - 5pm M-F; Sat. & Sun. 10am - 5pm.
State Archives: 8am - 4:30pm., M-F, except state holidays, and 2nd Sat. of each month, 10am - 4:30 pm.
State Historical Society offices: 8am - 5pm M-F, except state holidays.
phone: (701) 328-2666
fax: (701) 328-3710