After teaching Aang how to energybend, the lion turtle left Aang to wait for Ozai's arrival at Wulong Forest where the two would duel. As the latter and his airship fleet arrived, they immediately harnessed the power of Sozin's Comet to amplify their firebending abilities and burn down the landscape. A significant proportion of the green forest that lay around the rock forest was destroyed, prompting various wildlife to flee the scene.
While Sokka, Suki, and Toph interfered and sabotaged the airship fleet, preventing more damage from being done to the environment, Aang drew out the Fire Lord to have a one-on-one confrontation among the many rock pillars that dot the area of the forest. During this fight, many of these geographical wonders were destroyed by offensive or defensive moves by either party. Eventually, Aang managed to incapacitate Ozai, and used his control over the Avatar State and waterbending to extinguish the massive forest fire that threatened to consume the remaining green forest.