Cultural History
Several of the bluffs bear 400-year-old petroglyphs shaped like bird tracks, contemporaneous with the Roche-a-Cri Petroglyphs in Roche-a-Cri State Park.
The diaries and journals of west-bound settlers often mention these bluffs. A sawmill was operated in the vicinity, after which Mill Bluff was named.
Mill Bluff and a small area at its foot was proclaimed a state park on August 13, 1936. Mill Bluff State Park was added to the Ice Age National Scientific Reserve in May 1971. The park's boundaries were expanded to include the other bluffs later. In 2002 a portion of the park containing all of the major bluffs received a further level of protection as Mill Bluff State Natural Area.
Read more about this topic: Mill Bluff State Park
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