Agartha
A legendary underground world said to spread through the interior of the Earth. People with an advanced civilization are said to live there, with a capital called Shambhala. It spread through the writings of a 19th-century mystic.
Mystery Timeline｜1868–1945
Mysteries of the 1868–1945
From the age of The Legends of Tono to the days when Nessie and the coelacanth made headlines around the world: mysteries from the Meiji era to the end of World War II.
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Late 19th century
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1920s
Pacifis
A phantom continent hypothesized to have once existed in the middle of the Pacific Ocean. Proposed in the 1920s to explain the shared culture of the Polynesian islands, it has no geological evidence and has been rejected.
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Late 19th century to the 1920s
Mu (Lost Continent)
A phantom continent said to have existed in the Pacific and sunk into the sea along with its advanced civilization. It became known worldwide through books written in the early 20th century.
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1928 (made public)
Takeuchi Documents (Takeuchi Monjo)
Ancient documents said to have been handed down in the Takeuchi family of Ibaraki Prefecture. They describe super-ancient dynasties before Emperor Jimmu and a story that Christ died in Japan. Made public in 1928, they are considered modern forgeries.
