Lost lands are islands or continents believed by some to have existed during pre-history, but to have since disappeared as a result of catastrophic geological phenomena.
Legends of lost lands often originated as scholarly or scientific theories, only to be picked up by writers and individuals outside the academy. Occult and New Age writers have made use of lost lands, as have subaltern peoples. Phantom islands, as opposed to lost lands, are land masses formerly believed by cartographers to exist in the current historical age, but to have been discredited as a result of expanding geographic knowledge. The classification of lost lands as continents, islands, or other regions is in some cases subjective; for example, Atlantis is variously described as either a "lost island" or a "lost continent". Lost land theories may originate in mythology or philosophy, or in scholarly or scientific theories, such as catastrophic theories of geology.[1]
With the development of plate tectonic simulation software, new lost land has been discovered and confirmed by the scientific community (like Greater Adria in 2019).
Although the existence of lost continents in the above sense is mythical (aside from Zealandia[2] and Greater Adria[3]), there were many places on Earth that were once dry land, but submerged after the ice age around 10,000 BCE due to rising sea levels, and possibly were the basis for Neolithic and Bronze Ageflood myths. Some were lost due to coastal erosion or volcanic eruptions. An (incomplete) list follows:
A large island in the Mediterranean Sea, of which Malta is the only part not now submerged.
Zealandia, a scientifically accepted continent that is now 94% submerged under the Pacific Ocean, surrounding the areas of New Zealand and New Caledonia.
Llys Helig Welsh legends regarding the local rock formations conceal the palace of Prince Helig ap Glanawg, said to be part of a larger drowned kingdom near Penmaenmawr, Wales.
Ys, a mythical drowned city in Brittany, similar to other Celtic lost lands in Welsh and Cornish tradition. Most versions of the legend place the city in the Baie de Douarnenez.