Journey into the Hollow Earth

I invite you to accompany me on a strange journey, our destination – the wild and mysterious
interior of the Hollow Earth!
As recently as a century ago, many people believed the Earth was hollow, with lands, creatures, and strange peoples inside. Why has the belief been so persistent? How did this make its mark on
==} Check out my books on Amazon:
https://www.amazon.com/Fidelios-Automata-Adventure-Alternate-Tarantela-ebook/dp/B00X1N7THK
https://www.amazon.com/Fidelios-Dilemma-Steampunk-Tarantela-Trilogy-ebook/dp/B01HBQ7CA6
https://www.amazon.com/Miss-Ione-Mayan-Marvel-Adventures-ebook/dp/B01G2TBBPU
https://www.amazon.com/Professor-Ione-Epicurean-Incident-Adventures-ebook/dp/B071J7WNQG
https://www.amazon.com/Professor-Ione-Epicurean-Incident-Adventures/dp/0988244284