Page "Grenora, North Dakota" Paragraph 4

Grenora is home to the Writing Rock State Historical Site.

The Assiniboine, Lakota, and Plains Chippewa Indian tribes often returned to the Spirit Rock, or Hoi-waukon, located on a hilly prairie just outside of Grenora.

The rock served to mark a spot where Native Americans felt they could foretell the future.

The two granite rocks at this site are covered with petroglyphs presumably carved by ancient Plains Indians.