Spring Mill State Park, in Mitchell, IN, offers visitors many opportunities to get in touch with natural features, Pioneer culture, and the early stages of space exploration. Inside the park is a memorial to hometown hero, Virgil "Gus" Grissom. The Indiana State Nature Passport allows you to earn prizes as you explore Indiana DNR properties. It's free to sign up: https://visitindiana.com/explore All you need to do is check in to one of the passport locations, and you are on your way to earning p