While undergrowth in the forested part of the park is largely thick, keeping rivals and twolegs at bay, the old oak is so large little sunlight reaches the ground, leaving an open area around the tree itself for the clan to gather to eat and share tongues. There are several rocks and moss-covered fallen branches to lie upon here. Where the undergrowth begins around the camp's edge, the cats have helped defend their base by weaving bramble barriers that blend so well with the undergrowth, an unknown cat would not know they are even there.

One very large twisted root protrudes from the earth a few feet away from the trunk of the old oak. It is known as the Highroot, and it is from here leaders address the clan and preform ceremonies. The root has a flattened top for the leader to sit. A twist about half-way up forms a platform for the deputy.

The topmost hollow, about a third of the way up the trunk, is where the clan leader lives. It is spacious and comfortable. A broad branch grows in front of the entrance, extending out far enough to provide a wonderful view of the entire camp.

Two branches down from the leader's den lies the hollow the deputy and their family member can reside in. A curtain of bracken grows over the entrance, making this a sheltered and comfy den. There is plenty of room for building nests inside.

A hollow branch almost as wide as the trunk itself broke off half way long ago. The open end is easily reached by a gently sloping branch that runs just underneath it. The shelf-like walls of the branch are used for herb storage. At the base of the branch where it connects with the trunk, the hollow widens. Here nests for sick cats and the medicine cats themselves are found.

The largest hollow in the tree belongs to the Warriors of Rootclan. It actually extends all of the way through the trunk, with two wide hollows at either end around the entrances. A narrower passage, with room for perhaps two cats to travel through at the same time, connects the two chambers.

The apprentices share the medium-sized hollow underneath the warrior's den. The entrance is very wide, but sheltered by a curving branch just outside, with shady foliage growing down from it.

The elders den is only a short hop from the ground. A flat stone provides a step up for those who no longer climb or jump as well as they once did. The entrance is narrow, better to keep the den warm and sheltered.