Jan Lampbrechtshared by Gizgazs and Rupert Harris
Another interesting person doing extensive research on the hollow earth theory is Jan Lampbrecht from South Africa (ex-Zimbabwean) Google his name, and also see"
The Hollow Earth
How It All Began
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Jan Lamprecht, author of "Hollow Planets" and the African Crisis website, discusses a feasibility study conducted on the possibility of a hollow Earth, based on seismic data.