In the about 3 kilometers long loop road, twelve stations invite young and old to play and discover. Zipf and Zapf go along with the little natural scientists on their walk and narrate them interesting facts about the forest and its inhabitanst. At the same time the children have to crack several riddles to find the mysterious treasure at the end of the road. The trail is positioned amid of the talai forest in San Valentino. Don't forget to take paper and pencil to note the answers. Preprints also available at the Tourist Information.