Struggling artist Frank Dudley visited the Indiana Dunes 100 years ago and discovered his life's work – painting the fragile and constantly evolving landscape and promoting and preserving the dunes. Chicago Tonight looks at the enduring impact of Dudley's dramatic oil paintings, and talks with local experts such as James Dabbert, an IIT professor who co-wrote the book The Indiana Dunes Revealed: The Art of Frank V. Dudley.