Lemuria is the name of a hypothetical "lost land" variously located in the Indian and Pacific Oceans. The concept's 19th-century origins lie in attempts to account for discontinuities in biogeography; however, the concept of Lemuria has been rendered obsolete by modern theories of plate tectonics. Though Lemuria is no longer considered a valid scientific hypothesis, it has been adopted by writers involved in the occult, as well as some Tamil writers of India. Accounts of Lemuria differ, but all share a common belief that a continent existed in ancient times and sank beneath the ocean as a result of a geological, often cataclysmic, change, such as pole shift.
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