Deep Jungle is based on Disney's thirty-seventh animated feature, Tarzan, and is featured in Kingdom Hearts. It is a lush tropical forest of diverse animals and exotic plants. The primary inhabitants of this world are gorillas, who live in the secretive corners of the jungle and resist intrusion. An exploratory party has arrived to study them but its guide, Clayton, has other plans. The jungle is also home to hippos and other jungle creatures, including the Heartless' mimicry of the local animals. Travelling in this world is done by climbing up trees and jumping onto vines.
Much of the world is covered with dense jungle but some areas have signs of civilized inhabitance. There is an abandoned treehouse near the canopy that contains the remains of a previous visitor to the world. Also, the camp set up by Clayton contains many conveniences including stoves and slide projectors. The Bamboo Thicket near the camp ultimately leads to the beautiful Waterfall Cave, a secluded place that hides the world's keyhole.