Santorini: The world's fieriest caldera volcano 


The last huge eruption of the volcano dates back 3,600 years,
in the late bronze age. Thirty billion cubic meters of magma 
in the form of pumice and ash were blown to a height of up to
36 kilometers above the island. Pumice deposits dozens of meters
thick buried one of the most prosperous pre-historic settlements
of that period, feeding the myth of lost Atlantis.
 
The mild activity of the volcano after this major eruption
continuous into the present (the most recent eruption occurred in 
1950) building up two small islands within the caldera, Palea and
Nea Kameni. These islands represent the volcano's most recent 
activity.