The ancient banyan-grove tree is a single, enormous tree that stands in the middle of the Foggy Swamp with a root system stretching for many miles. Over time, the tree's roots have spread across the entirety of the swamp and created shoots which have propagated an entire forest of new trees. The banyan-grove tree and the swamp are protected by Huu, a waterbender who claimed to have attained enlightenment beneath its branches.