BOONE, Iowa – 2024 will mark the 100th anniversary of the dedication of Ledges State Park. Iowa DNR staff and members of Friends of the Ledges will host a 100th anniversary kick-off event on Dec. 21, at the Boone City Hall Auditorium, 923 8th Street, in Boone. Doors open at 6 p.m., with a short presentation at 6:30. The event is free to attend.