Atlantis is a fictional island mentioned in Plato's works Timaeus and Critias as part of an allegory on the hubris of nations. In the story, Atlantis is described as a naval empire that ruled all Western parts of the known world, making it the literary counter-image of the Achaemenid Empire. After an ill-fated attempt to conquer "Ancient Athens," Atlantis falls out of favor with the deities and submerges into the Atlantic Ocean. Since Plato describes Athens as resembling his ideal state in the Republic, the Atlantis story is meant to bear witness to the superiority of his concept of a state.
Lyonesse is a kingdom which, according to legend, consisted of a long strand of land stretching from Land's End at the southwestern tip of Cornwall, England, to what is now the Isles of Scilly in the Celtic Sea portion of the Atlantic Ocean. It was considered lost after being swallowed by the ocean in a single night. The people of Lyonesse were said to live in fair towns, with over 140 churches, and work in fertile, low-lying plains. Lyonesse's most significant attraction was a castle-like cathedral that was presumably built on top of what is now the Seven Stones Reef between Land's End and the Isles of Scilly, some 18 miles (29 km) west of Land's End and 8 miles (13 km) north-east of the Isles of Scilly. It is sometimes spelled Lionesse.
Valinor or the Blessed Realm is a fictional location in J. R. R. Tolkien's legendarium, the home of the immortal Valar on the continent of Aman, far to the west of Middle-earth; he used the name Aman mainly to mean Valinor. It includes Eldamar, the land of the Elves, who as immortals are permitted to live in Valinor.
Mu is a lost continent introduced by Augustus Le Plongeon (1825–1908), who identified the "Land of Mu" with Atlantis. The name was subsequently identified with the hypothetical land of Lemuria by James Churchward (1851–1936), who asserted that it was located in the Pacific Ocean before its destruction. The place of Mu in both pseudoscience and fantasy fiction is discussed in detail in Lost Continents by L. Sprague de Camp.
A landmass, or land mass, is a large region or area of land that is in one piece and not noticeably broken up by oceans. The term is often used to refer to lands surrounded by an ocean or sea, such as a continent or a large island. In the field of geology, a landmass is a defined section of continental crust extending above sea level.
Lemuria, or Limuria, was a continent proposed in 1864 by zoologist Philip Sclater, theorized to have sunk beneath the Indian Ocean, later appropriated by occultists in supposed accounts of human origins. The theory was discredited with the discovery of plate tectonics and continental drift in the 20th century.
In J. R. R. Tolkien's legendarium, the history of Arda, also called the history of Middle-earth, began when the Ainur entered Arda, following the creation events in the Ainulindalë and long ages of labour throughout Eä, the fictional universe. Time from that point was measured using Valian Years, though the subsequent history of Arda was divided into three time periods using different years, known as the Years of the Lamps, the Years of the Trees, and the Years of the Sun. A separate, overlapping chronology divides the history into 'Ages of the Children of Ilúvatar'. The first such Age began with the Awakening of the Elves during the Years of the Trees and continued for the first six centuries of the Years of the Sun. All the subsequent Ages took place during the Years of the Sun. Most Middle-earth stories take place in the first three Ages of the Children of Ilúvatar.
The three Storegga Slides are amongst the largest known submarine landslides. They occurred at the edge of Norway's continental shelf in the Norwegian Sea, approximately 6225–6170 BCE. The collapse involved an estimated 290 km (180 mi) length of coastal shelf, with a total volume of 3,500 km3 (840 cu mi) of debris, which caused a paleotsunami in the North Atlantic Ocean.
Kumari Kandam is a mythical continent, believed to be lost with an ancient Tamil civilization, supposedly located south of present-day India in the Indian Ocean. Alternative names and spellings include Kumarikkandam and Kumari Nadu.
Kitezh is a legendary and mythical city beneath the waters of Lake Svetloyar in the Voskresensky District of the Nizhny Novgorod Oblast in central Russia. Reference to Kitezh appears for the first time in Kitezh Chronicle, an anonymous book from the late 18th century, believed to have originated among the Old Believers.
There are several hypotheses about real-world events that could have inspired Plato's fictional story of Atlantis, told in the Timaeus and Critias. While Plato's story was not part of the Greek mythic tradition and his dialogues use it solely as an allegory about hubris, researchers have speculated about real natural disasters that could have served as inspiration. Additionally, many works of pseudohistory and pseudoarchaeology treat the story as fact, offering reinterpretations which tie to national mysticism or theories of ancient aliens. While Plato's story explicitly locates Atlantis in the Atlantic Ocean beyond the Pillars of Hercules, location hypotheses include Helike, Thera, Troy, and the North Pole.
The legendary island of Atlantis has often been depicted in literature, television shows, films and works of popular culture.
Atlantis: The Lost Continent Revealed is a pseudohistorical book by Charles Berlitz. He lists several alternative theories on where the possible mythical Atlantis may have been situated, and cites different legends and stories that may support the different theories. All areas and theories are covered starting with Plato, Crete (Thera), Azores and Edgar Cayce's involvement in the story.
Cantre'r Gwaelod, also known as Cantref Gwaelod or Cantref y Gwaelod, is a legendary ancient sunken kingdom said to have occupied a tract of fertile land lying between Ramsey Island and Bardsey Island in what is now Cardigan Bay to the west of Wales. It has been described as a "Welsh Atlantis" and has featured in folklore, literature, and song.
Doggerland was an area of land in Northern Europe, now submerged beneath the southern North Sea. This region was repeatedly exposed at various times during the Pleistocene epoch due to the lowering of sea levels during glacial periods, though the term "Doggerland" is generally specifically used for this region during the Late Pleistocene and Early Holocene. During the early Holocene, the exposed land area of Doggerland stretched across the region between what is now the east coast of Great Britain, the Netherlands, the western coast of Germany, and the Danish peninsula of Jutland. Between 10,000 and 7,000 years ago, Doggerland was inundated by rising sea levels, disintegrating initially into a series of low-lying islands before submerging completely. The impact of the tsunami generated by the Storegga underwater landslide c. 8200 years ago on Doggerland is controversial. The flooded land is known as the Dogger Littoral.
Zealandia, also known as Te Riu-a-Māui (Māori) or Tasmantis, is an almost entirely submerged mass of continental crust in Oceania that subsided after breaking away from Gondwana 83–79 million years ago. It has been described variously as a submerged continent, continental fragment, and microcontinent. The name and concept for Zealandia was proposed by Bruce Luyendyk in 1995, and satellite imagery shows it to be almost the size of Australia. A 2021 study suggests Zealandia is over a billion years old, about twice as old as geologists previously thought.
Númenor, also called Elenna-nórë or Westernesse, is a fictional place in J. R. R. Tolkien's writings. It was the kingdom occupying a large island to the west of Middle-earth, the main setting of Tolkien's writings, and was the greatest civilization of Men. However, after centuries of prosperity, many of its inhabitants ceased to worship the One God, Eru Ilúvatar, and they rebelled against the Valar. They invaded Valinor in an erroneous search for immortality, resulting in the destruction of the island and the death of most of its people. Tolkien intended Númenor to allude to the legendary Atlantis.
A submerged continent or a sunken continent is a region of continental crust, extensive in size but mainly undersea. The terminology is used by some paleogeologists and geographers in reference to some landmasses.
Forgotten continent may refer to:
The geography of Middle-earth encompasses the physical, political, and moral geography of J. R. R. Tolkien's fictional world of Middle-earth, strictly a continent on the planet of Arda but widely taken to mean the physical world, and Eä, all of creation, as well as all of his writings about it. Arda was created as a flat world, incorporating a Western continent, Aman, which became the home of the godlike Valar, as well as Middle-earth. At the end of the First Age, the Western part of Middle-earth, Beleriand, was drowned in the War of Wrath. In the Second Age, a large island, Númenor, was created in the Great Sea, Belegaer, between Aman and Middle-earth; it was destroyed in a cataclysm near the end of the Second Age, in which Arda was remade as a spherical world, and Aman was removed so that Men could not reach it.
