Santorini, Greece

Santorini , traditionally and authoritatively Thira  is an island in the southern Aegean Sea, around 200 km (120 mi) southeast of Greece's territory. It is the biggest island of a little, roundabout archipelago which bears the same name and is the remainder of a volcanic caldera. It structures the southernmost part of the Cyclades gathering of islands, with a region of more or less 73 km2 (28 sq mi) and a 2011 statistics populace of 15,550. The region of Santorini embodies the occupied islands of Santorini and Therasia and the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi, and Christiana. The aggregate area zone is 90.623 km2 (34.990 sq mi). Santorini is a piece of the Thira provincial unit. 

Santorini is basically what stays after a colossal volcanic ejection that demolished the most punctual settlements on an earlier single island, and made the current geographical caldera. A titan focal, rectangular tidal pond, which measures around 12 by 7 km (7.5 by 4.3 mi), is encompassed by 300 m (980 ft) high, soak precipices on three sides. The fundamental island slants descending to the Aegean Sea. On the fourth side, the tidal pond is differentiated from the ocean by an alternate much more diminutive island called Therasia; the tidal pond is joined with the ocean in two spots, in the northwest and southwest. The profundity of the caldera, at 400m, makes it workable for everything except the biggest boats to stay anyplace in the secured cove; there is likewise a recently assembled marina at Vlychada, on the southwestern coast. The island's main port is Athinias. The capital, Fira, sticks to the highest point of the bluff looking down on the tidal pond. The volcanic rocks present from the former ejections characteristic olivine and have a little vicinity of hornblende. 

It is the most dynamic volcanic focus in the South Aegean Volcanic Arc, however what remains today is primarily a water-filled caldera. The volcanic circular segment is roughly 500 km (310 mi) long and 20 to 40 km (12 to 25 mi) wide. The district first got to be volcanically dynamic around 3–4 million years prior, however volcanism on Thera started around 2 million years back with the expulsion of dacitic magmas from vents around the Akrotiri. 

The island is the site of one of the biggest volcanic ejections in written history: the Minoan emission (in some cases called the Thera ejection), which happened by most accounts 3600 years back at the stature of the Minoan development. The emission left a huge caldera encompassed by volcanic fiery remains stores many meters profound and may have headed by implication to the breakdown of the Minoan development on the island of Crete, 110 km (68 mi) to the south, through a monstrous tidal wave. An alternate mainstream hypothesis holds that the Thera ejection is the wellspring of the legend of Atlantis.