Santorini, or Thira, is the top destination in Greece and among the most romantic destinations in Greek islands and the whole world. Located in the Aegean Sea, in the Cyclades islands, Santorini was the site of one of the largest volcanic eruptions in the world and what remains today is a submerged volcano and a caldera, as a complex of islands (Thira, Thirassia (or Thirassia), Aspronissi, Palea and Nea Kameni).
This islands complex was created precisely because of this intense volcanic activity of the earth! Twelve massive eruptions, one every 20,000 years or so, contributed to the creation of a caldera, destroying most of the volcano.
The last major explosion took place about 3,600 years ago (in the Minoan era), covering the three islands (Thira, Thirasia, Aspronissi) with ash, thus eliminating a prehistoric culture. The volcanic activity continued much more mildly, creating within Caldera the islands of Old and Nea Kameni. The island is thus a huge living geological museum, an ideal place to observe the processes of building and evolving a volcano.