WCCA TV took part in the Tree Climbing Expedition at the Ecotarium in Worcester, Mass. where we learned how to use tree climbing equipment from experienced climbers. You can even don a harness and helmet and ascend by rope into the leafy canopy of one of the savanna's giant oaks. Tree Climbing Expeditions are held for a maximum of 10 climbers (must be at least 7 years old) and a total expedition size of 20 participants. Chaperones are required for children up to age 16 (one adult per 10 children).