I know there were some theories about the Lost island being the Atlantis (e.g “The Ultimate Theory: The Philosophers Mind” by Edgar_Hallowax), i’m pretty sure that the island is Atlantis, only after the words of Locke about “moving the island” at the end of S04x11.
My arguments are: (some may be reiterated)
All the historical sources about the Atlantis (which is described as an island or a group of islands) refers to an abrupt disappearance of the whole continent. Many writings, including Plato’s “Dialogues” tells us that in a single day and night, with violent earthquakes and floods the island of Atlantis disappeared in the depths of the sea. Now we all know the island can move in time and space. In the Season 4 finale we will probably see how Locke and Ben will “move the island”. Look out for an earthquake and maybe flood like event during the season finale.
The location of the Lost island also fits the most probable location of Atlantis; in the Pacific Ocean, south of Indonesia. (
http://www.lost-civilizations.net/atlan ... klist.html)
The capitol of Atlantis was described as a city surrounded by three concentric moats with carved tunnels into the rings and an outer Wall… (
http://www.unmuseum.org/atlantis.htm). Now, look at the Dharma logo!.. (
http://www.lostpedia.com/wiki/dharma_Logos). The main logo and all the other station logos only have the 3 concentric interrupted rings and an outer solid line in common (which may resemble the inner moats interrupted with tunnels and bridges and the outer wall). The similarity to the presumed configuration of the lost city of Atlantis is remarkable.
Another central, unique feature of Atlantis were its seas, rendered “innavigable” by cataclysm as reported by Plato and other ancient authorities. These writings are interpreted as the seas were innavigable because they were covered thick with giant banks of floating, fiery pumice-stone from volcanic eruptions. Seas around our Lost island is also innavigable, but due to magnetic anomalies.
We all know that there is a four-toe ancient statue on the island. It is said that Apollon and Athena, the Greek Gods, are usually depicted with four toes on each foot. So this statue with his sandal is a definite proof for the existence of an ancient civilization on the island.
Some people on the island call themselves as “natives”, they are led by Richard Apert who dont seem to age. Remember “Fountain of Youth”, one of the most famous stories about the legend of Atlantis.
We also know that there is a “temple” on the island which we didn’t see yet. How about a Temple of Poseidon, another Atlantean landmark?… Remember the hyrogliphes in the hatch as well. For many historians Atlantean civilization was the ancestor of ancient Egypt.
If the island sink and rise for various reasons (volcanic activity or deliberate “movement”) this explains why Black Rock is in the middle of the island.
According to some investigators Atlantis was a place of advanced civilization. On the island we witnessed many advanced technology stations supposed to be operated by Dharma Initiative. We are informed that the roots of Dharma goes to Alvar Hanso but we do not clearly know if the stations are build by Dharma or they are just taken over the stations or some technologies from the “natives”. Moreover we still do not know what “Black Smoke” is, how they “time travel” or move the island etc. All of these “technologies” can be the heritage of an ancient civilization whose descendants still living on the island. Alvar Hanso may be a man who once discovered the island by accident and revealed the features it has and began to exploit it in some way or other. Native people of the island may have tried to expel them and succeed with the help of Benjamin Linus, but they have returned now. In this point both Benjamin Linus and John Locke seems to be special people for the native folk (hence Atlanteans), their birth, their arrival in the island and their relationship with the natives (and Jacob) are another story but I think the advanced technology of the Atlanteans has something to do with Ben and John’s births (John was a “special project”)