 Hollow Earth proponents

Hollow Earth proponents are individuals or groups who advocate for the belief in the existence of a hollow Earth. This theory posits that the Earth is not a solid sphere, but rather contains large interior spaces or cavities. Some versions of the Hollow Earth theory suggest that these internal spaces could be inhabited by advanced civilizations or unique ecosystems. Historically, the idea of a hollow Earth has roots in various mythologies and has evolved through literature and pseudoscientific theories.