Santorini (Σαντορίνη), classically named 'Thera' and officially Thira (Θήρα), is an island in the southern Aegean Sea, about 200 km (120 mi) southeast of Greece's mainland. Santorini is essentially what remains after an enormous volcanic eruption that destroyed the earliest settlements on a formerly single island and created the current geological caldera.

The island is the site of one of the largest volcanic eruptions in recorded history: the Minoan eruption (sometimes called the Thera eruption), which occurred some 3,600 years ago at the height of the Minoan civilization. The eruption left a large caldera surrounded by volcanic ash deposits hundreds of metres deep and may have led indirectly to the collapse of the Minoan civilization on the island of Crete, 110 km (68 mi) to the south, through a gigantic tsunami. Another popular theory holds that the Thera eruption is the source of the legend of Atlantis.

In Greek, the term 'Atlantis' means 'island of Atlas' (Ἀτλαντὶς νῆσος), and it may very well have applied to the island of Santorini. It was Plato who brought life--and myth--to Atlantis. According to him, Poseidon fell in love with Cleito, the daughter of Evenor and Leucippe, who bore him five pairs of male twins. The eldest of these, Atlas, was made rightful king of the entire island and the ocean--called the Atlantic Ocean in his honor--and was given the mountain of his birth and the surrounding area to rule over. It was also Plato who wrote that Poseidon made Atlantis--a huge island with a volcano at its center--His home after Zeus, Hades and He divided the world.

Plato's description of Atlantis would have fit the ancient Hellenic version of Santorini well. It was a large, mountainous island, with an active volcano at its center. The large settlement on the island was build around said volcano. Poseidon's influence on the island isn't a stretch of the imagination at all; there was sea and ocean all around and from time to time, the entire island would tremble due to the volcano.

The volcano eruption decimated the settlement, but from what archeologists and scholars have been able to piece together, the settlement was a sight to behold while it stood. It had walls eight meters tall, three story houses, beautiful frescos and a rich economic climate. The volcano eruption preserved much of the ancient city of Akrotiri, despite the huge lagoon the eruption left at the center of the island.

Using visual effects, scientists and visual artists have created a video  presents the gradual birth of the volcanic rock island after a series of explosions and earthquakes caused by four separate volcanoes. The data was uploaded by user Nikos Korakakis, based on University scientific research and studies.