Famed Hollow Earth researcher Warren Smith initially wrote "This Hollow Earth" in 1972. Since then, it has stood the test of time, and is still one of the best books on the subject, almost 50 years later. A must-have for serious Inner Earth buffs, aficionados, and researchers.
Description:
Famed Hollow Earth researcher Warren Smith initially wrote "This Hollow Earth" in 1972. Since then, it has stood the test of time, and is still one of the best books on the subject, almost 50 years later. A must-have for serious Inner Earth buffs, aficionados, and researchers.