Digger Steele's Journal was a small book once owned by a man called Digger Steele. Digger Steele wrote about the Inner World in his journal. The journal mentioned that to enter the Inner World, one must find the hidden doorway deep within the ruins of an ancient pyramid in the jungle. After inheriting his grandfather's journal, Hunter Steele follows it's instructions and manages to find his way into the Inner World. The journal is neither seen nor mentioned directly again.