With each letterbox recently hidden for the season (which starts March 19), just waiting to be discovered, you’re sure to have fun exploring nature (and creating great memories while doing so).

Pick a preserve or trail and follow the clues (found here) to find the hidden letterbox and take in the sights and sounds of nature along the way. Once found, use the stamp inside to mark your PLAN Passport (found here), and take one of the cards inside with you and send it back telling us all about your experience.

Starting this Saturday, we hope to see you out on the preserves following the new clues for a new adventure with family and friends!