The children are transported to the excavation site of the Petrified Forest of Lesvos along the road Kalloni – Sigri. Through a research route along the new road, they observe the works carried out at the construction site of the Petrified Forest, discover information about the conservation works and their results, identify and record the tools. At the same time, they identify and map the fossils, rocks, volcanic, tectonic and geomorphological structures, which they encounter.