Caverns, Cauldrons, and Concealed Creatures: A Study of Subterranean Mysteries in History, Folklore, and Myth
Format: paperback
ISBN:
0971316635
Publish date: September 1st 2002
Publisher: TGS-HiddenMysteries
Edition language: English
This is an extremely interesting book with an interesting and scarey hypothesis that makes more sense to me than the usual "guesses" and "explanations". The answer might just be beneath our feet instead of amongst the stars.