This was the island of Atlantis.

                   Atlantis was the domain of Poseidon, god of the sea. When Poseidon fell in love with a
                   mortal woman, Cleito, he created a dwelling at the top of a hill near the middle of the
                   island and surrounded the dwelling with rings of water and land to protect her.

                   Cleito gave birth to five sets of twin boys who became the first rulers of Atlantis. The
                   island was divided among the brothers with the eldest, Atlas, first King of Atlantis,
                   being given control over the central hill and surrounding areas.

                   At the top of the central hill, a temple was built to honor Poseidon which housed a
                   giant gold statue of Poseidon riding a chariot pulled by winged horses. It was here that
                   the rulers of Atlantis would come to discuss laws, pass judgments, and pay tribute to
                   Poseidon..

                   To facilitate travel and trade, a water canal was cut through of the rings of land and
                   water running south for 5.5 miles (~9 km) to the sea.

                   The city of Atlantis sat just outside the outer ring of water and spread across the plain
                   covering a circle of 11 miles (1.7 km). This was a densely populated area where the
                   majority of the population lived.

                   Beyond the city lay a fertile plain 330 miles (530 km) long and 110 miles (190 km)
                   wide surrounded by another canal used to collect water from the rivers and streams of
                   the mountains. The climate was such that two harvests were possible each year. One in
                   the winter fed by the rains and one in the summer fed by irrigation from the canal.

                   Surrounding the plain to the north were mountains which soared to the skies. Villages,
                   lakes, rivers, and meadows dotted the mountains.

                   Besides the harvests, the island provided all kinds of herbs, fruits, and nuts. An
                   abundance of animals, including elephants, roamed the island.

                   For generations the Atlanteans lived simple, virtuous lives. But slowly they began to
                   change. Greed and power began to corrupt them. When Zeus saw the immorality of
                   the Atlanteans he gathered the other gods to determine a suitable punishment.

                   Soon, in one violent surge it was gone. The island of Atlantis, its people, and its
                   memory were swallowed by the sea.
 
More Details :-
                            More Detailed Information On Atlantis
                         Theory Of Atlantis
                         Where Was Atlantis
                         Timaeus and Critias
                         Vital Statistics
                         Index