You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Backbone State Park, Maquoketa River valley and adjacent bluffs, north of Dundee Remove constraint Place: Backbone State Park, Maquoketa River valley and adjacent bluffs, north of Dundee Topic Fungi Remove constraint Topic: Fungi Topic Graphis Remove constraint Topic: Graphis Type still image Remove constraint Type: still image