A classic paper by Riley Crabb.

Is the planet Earth hollow? Scientists ridicule the idea but their molten core theory has never been proven either. Whether solid or hollow, there are mysterious networks of tunnels and caverns penetrating much of the earth’s outer shell. Here, stories of the Inner Earth and its bizarre denizens are analyzed, a Guided Tour of the Earth’s Interior.

Price: $9.95

Stapled: 33 pp
Language: English
Product Code: B0073