Mu is a legendary lost continent that also appears in lost world literature. It is a term introduced by Augustus Le Plongeon, who used the “Land of Mu” as an alternative name for Atlantis.
It was subsequently popularized as an alternative term for the hypothetical land of Lemuria by James Churchward, who asserted that Mu was located in the Pacific Ocean before its destruction.
The mythical idea of the “Land of Mu” first appeared in the works of Augustus Le Plongeon, after his investigations of the Maya ruins in Yucatán.
He claimed that he had translated the first copies of the Popol Vuh, the sacred book of the K’iche’ from the ancient Mayan using Spanish. Yucatán was older than those of Greece and Egypt, and told the story of an even older continent.
The lost continent of Mu was first proposed in the mid-19th century to explain the phenomenon of similar symbols, architecture and myths found in otherwise disparate, ancient cultures around the world.
Unfortunately for adherents to the idea, there is no empirical evidence to support its existence or the theories of its demise as geologists dismiss the existence of Mu as physically impossible, arguing that a continent can neither sink nor be destroyed in the short period of time asserted in folklore and literature.
The lost continent was apparently doomed from the start since the word, Mu, supposedly means “a land that had been submerged after a catastrophe”. Undeterred and conflating what he thought was a story of a lost land with the myth of Atlantis, Le Plongeon decided that his Mu had been a continent peopled by an advanced civilization that had, in ancient times, sunk into the Atlantic Ocean.