Uncovering the Secrets of Michigan’s Ancient Petroglyphs
A visit to Michigan’s Sanilac Petroglyphs Historic State Park Photo: Ebmodaakowet, known as the Bone Man, depicted shooting an arrow of knowledge into future generations. Photo by Doug Marrin. In the heart of Michigan’s thumb lies a unique historical treasure, the Sanilac Petroglyphs Historic State Park. “Ezhibiigaadek asin” (aysah-gabah-ahdek ah-sin): knowledge written in stone announces ...