Whack bushes in the Jungle until you have found 12 Jungle Flowers. Give them to the little lost girl in the Steamy Jungle zone when your task is complete and she will open the southern gate for you.
Zone Received In: The Steamy Jungle
Stage 1: Find Twelve Jungle Flowers (0/12)
Stage 2: Return to the Lost Girl
Reward: 500xp (!), Gate unlocked