Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Native American pictographs in Minnesota
The Hegman Lake Pictographs are a well-preserved example of a Native American pictograph, located on North Hegman Lake in the Boundary Waters Canoe Area Wilderness in Minnesota, USA. The rock art is considered "Perhaps the most visited and photogenic pictograph within the State of Minnesota."