Flatlantis by Eric Dubay is a 194-page book that explores flat Earth theory, polar mythology, and the legend of Atlantis, arguing that these concepts are interconnected. The book presents a case that the Earth is a stationary, geocentric, flat plane and investigates the history of how the heliocentric globe model was adopted. The book is described as a mixture of historical analysis, conspiracy theory, and occult,, metaphysical research, promoting the idea of a "dome world".