Home Events & Festivals Explore National Lakeshore with Passport to the Dunes Twitter Facebook Print About Explore National Lakeshore with Passport to the DunesDiscover some of the hidden treasures of Indiana Dunes National Lakeshore through a new Passport to the Dunes program. With so many different access points, it can be difficult to find all of this national park's special places. The passport helps guide visitors on an adventure of discovery to nine park locations ranging from West beach to lesser-known areas like the Great marsh, Glenwood Dunes and Miller Woods. The passport can be picked up at either the Indiana Dunes Visitor Center in Porter, Indiana or the park's Paul H. Douglas Center in the Miller section of Gary, Indiana. To complete is, visit at lease eight of the locations in the passport and answer one questions related to each site. The answers can be found by hiking the trails and reading interpretive signs at each location. Bring the completed passport back to either center and get a free 12" x 19" poster featuring the newly-designed park site logos. There is a limit of one poster per group or family. This is a great program for someone who has at least a couple of days to explore the park or who make multiple visits.