Visit Indiana, in partnership with the Indiana Department of Natural Resources, announced on Monday the Indiana State Nature Passport to encourage visitors to discover new places and enjoy the outdoors.

This new digital passport is free and participants can even earn cool prizes and participate in seasonal sweepstakes.

Available in all 59 state properties, this new program will have visitors use their mobile phones to check-in while on the grounds to earn prizes and enter into drawings.

To learn more about the program and see the prizes offered, visit here.