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 from Ancient-Origins Website 
 
 
 
 Imaginary ruins of a sunken kingdom. Source: manjik /Adobe Stock 
 
			 
 There is something about the underwater world that captures our imagination - perhaps it is the curiosity and intrigue about what may lie beneath the surface, or the idea that entire cities may be concealed on the ocean floor, out of sight and out of reach. 
 Sometimes marine archaeologists are lucky enough to make incredible discoveries, but several of the sunken kingdoms in this article remain hidden: 
 
 
 
			 
			 Shore Temple. Mahabalipuram, India. 
			
			(University of Southampton) 
			 
 
			The 'Seven 
			Pagodas of Mahabalipuram' was one of the architectural 
			achievements of the Pallava Dynasty (3rd - 9th 
			century AD). 
 Only the Shore Temple, still visible today, was left above the water as evidence that this beautiful city had once existed. Evidence for the submerged temples emerged following the devastating tsunami that occurred December 26, 2004. 
 During the tsunami, it was reported that, 
 
			The force of the tsunami 
			managed to expose some objects that were covered by centuries of 
			silt. 
 The recent discoveries have sparked renewed interest in the Mahabalipuram legend and many say the myth of the seven submerged temples might one day be considered a true historical event. 
 
			 
			 Artist's depiction of Lyonesse being swept away. 
			
			( AnnoyzView) 
			 
 
			It's now referred to as 
			the "Lost Land of Lyonesse," as it is ultimately said to have sunk 
			into the sea. 
 
			Very suddenly the land 
			was flooded by the sea, entire villages were swallowed, and the 
			people and animals drowned. Once it was covered in water, the land 
			never re-emerged. 
 Evidence shows that sea levels were considerably lower in the past, so it's possible that an area that once contained a human settlement above-ground is now beneath the sea. 
 Indeed, fisherman near the Scilly Isles tell tales of retrieving pieces of buildings and other structures from their fishing nets. 
 
			These stories have never 
			been substantiated, and are viewed by some as tall tales... 
 
 
			 
			 Cantre'r Gwaelod, or The Lowland Hundred: The stumps are the remains of an ancient submerged forest that extends along the coast. Is this a long-lost sunken kingdom? 
			
			(Richerman/ CC BY SA 3.0 ) 
			 
 Up to around the 17th century, Cantre'r Gwaelod was known as Maes Gwyddno (meaning 'Gwyddno's Land'), so named after this Welsh ruler. 
 
			An earlier version of the 
			legend associated with Maes Gwyddno asserts that the land was 
			submerged under water when Mererid, a priestess of a fairy well, 
			allowed the water to overflow, sinking the kingdom forever. 
 
			The location of the 
			ancient kingdom is now believed to lie between Ramsey Island and 
			Bardsey Island in
			
			Cardigan Bay, and to extend about 
			32 km (19.88 miles) west of the current shoreline into the bay. 
 
 
			 
			 Artist's representation of an Aztec temple in a mystery land. Aztlan is the Aztec's legendary homeland. 
			
			( Christopher /Adobe Stock) 
			 
 
			Some believe it is a 
			mythical land which will live on through legend but will never be 
			found in physical existence. 
 
			However, these searches 
			have been fruitless, as the location - and existence - of Aztlan 
			remains a mystery. 
 In some tales, Aztlan is viewed as a land of paradise, specifically an island on a lake, for all inhabitants. 
 
			However, the Aztecs fled 
			the island when a tyrannical elite took hold. Their migration from 
			Aztlan to Tenochtitlán began on May 24, 1064, which was the first 
			Aztec solar year. 
 
 
			 
			 An amazingly well-preserved 1.9-metre-tall Heracleion stele commissioned by Nectanebo I in 378 - 362 BC, complete with detailed and clearly readable inscriptions. 
			
			(Cristoph Gerigk) 
			 
 
			It was one of the most 
			important trade centers in the Mediterranean before it sank more 
			than a millennium ago. 
 
			But in 2001 an underwater 
			archaeologist searching for French warships stumbled across the 
			sunken city. 
 
			It was one of the most 
			significant underwater discoveries in over a decade. 
 
			 
			 A diver explores the Baiae Underwater Archaeological Site. (Antonio Busiello) 
			 
 In its heyday, Baiae was regularly visited by famous Roman Caesars including Julius Caesar, Nero, and Hadrian - who died there. 
 It was considered one of the most important Roman cities for centuries. 
 
			
			
			Pliny used to live here and 
			from here, across the gulf, he witnessed and described the 79 AD 
			eruption of Mount Vesuvius that destroyed Pompeii and Herculaneum. 
 
 
			 
			 The original foundations of the city underneath the reconstructed pillars and walls of one of the buildings. 
			
			(Discovery) 
			 
 
			It's believed to be the 
			oldest known submerged city in the world. 
 
			Research in 2009 revealed 
			that it had been inhabited prior to 2800 BC. Scientists estimate 
			that the city sunk around 1000 BC due to earthquakes that shifted 
			the land. 
 The name of the city is still unknown. 
 
 
			 
			 Excavations at the site of Helike. In this case, a Hellenistic-era building; possibly used as a dye-works. 
			
			(Drekis/ CC BY SA 3.0 ) 
			 
 
			During its heyday, it was 
			the leader of the first Achaean League, a confederation that 
			consisted of 12 cities in the surrounding area. 
 
			Some signs of the city's 
			impending doom were recorded, including the appearance of 'immense 
			columns of flames' and the mass migration of small animals from the 
			coast to the mountains several days prior to the disaster. 
 
			It was not until 2001 
			that the ruins were finally unearthed and only in 2012, when the 
			destruction layer was uncovered, that the site was confirmed as 
			Helike. 
 
 
			 
			 Deriv; A drowned land. 
			
			(Flickr/ CC BY-NC 2.0 ) 
			 
 
			They claim they did not 
			come to North America across the Bering Strait, but north from South 
			America, specifically from a land called
			
			Kásskara. 
 
			Hawaii is a remnant of 
			the Hopi ancestors' original motherland, and
			
			Rapa Nui (Easter Island) is the 
			last remaining of several islands that helped Kásskaran refugees 
			cross the vast expanse of ocean to South America. 
 
			People had high morals 
			and lived peacefully for a time. But when men began to lose respect 
			for one another and fought with the Atlanteans both continents met 
			their demise. 
 
 
			 
 
			 
			
			(Alexander Maleev) 
			 
 
			Located in the North Sea, 
			Doggerland is believed to have once measured approximately 100,000 
			square miles (258,998 square kilometers). 
 
			Prehistoric humans living 
			in the region lost their homes when catastrophic floods covered the 
			territory sometime between 8000 - 6000 BC. 
 
			Researchers have mapped 
			the seabed to track how climate change had an impact on Doggerland 
			and the succession of cataclysms that turned it into a sunken land. 
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