Natural Resources

Talk to Madisi to start this quest. Stay put as Harlow contacts Dr. Hanson and tells you where to get the medicine. Once your objective is updated, you can take the boat and head east to find the tree barks in the marked locations.

One of the barks is located inside a cave. Clear the area and head to the end of the cave where there are offerings and baskets. The bark is found on the ground.

One of the barks can be found by heading south along the main rod then climbing a vine to the west. It is located on the ground beside the fallen tree trunk, some corpses and baskets.

The third one is found in the Moazik Shrine to the southeast. Found on the ground, beside the offerings.

Once you've collected all the barks, return to Madisi to open the quest then talk to Batram to complete the mission. You can also trade with him.