Also there is the legon of Lemuria
Description
Lemuria was an ancient civilization which existed prior to and during the time of Atlantis. Physically, it is believed that Lemuria existed largely in the Southern Pacific, between North America and Asia/Australia. Lemuria is also sometimes referred to as Mu, or the Motherland (of Mu). At its peak of civilization, the Lemurian people were both highly evolved and very spiritual. While concrete physical evidence of this ancient continent may be difficult to find, many people "know" that they have a strong connection to Lemuria. http://www.lemuria.net/
http://www.thule.org/lemuria.html <---- This site has a map layout
Lemuria is the name of a hypothetical "lost land" variously located in the Indian and Pacific Oceans. Its 19th century origins lie in attempts to account for discontinuities in biogeography. Lemuria has been rendered superfluous by modern understanding of plate tectonics.
Though Lemuria has passed out of the realm of science, it has been adopted by Occult writers, as well as some Tamil people of India. Accounts of Lemuria differ according to the requirements of their contexts. However, all share a common belief that the continent existed in ancient times but sank beneath the ocean as a result of geological change, often cataclysmic.
Geologists today regard sunken continents as physical impossibilities, given the isostatic equilibrium of continental plates floating on the thermoplastic mantle.