The volcanic complex of Santorini includes the two volcanic islands of Palaia and Nea Kameni and Columbo, a below sea crater with a depth of 500 meters.
Santorini was initially called Strogili, which means circular, as was its shape before the huge volcanic eruptions which happened during thousands of years. The eruptions caused the sinking of big parts of the island, creating the steep caldera and Palaia and Nea Kameni.
The latest eruption was in 1950 and the volcano, which is still active, remains under constant monitoring by the scientists.
You can visit the two small volcanic islands by boats departing from old Fira port, the new port (Athinios) and Ammoudi, below Oia. The day trip to Santorini’s volcano includes both islands, starting from Nea Kameni where you can climb up to the crater. Then you will visit Palaia Kameni where you can swim in the hot waters.
If you intent to swim at Palaia Kameni, don’t wear your most expensive swimsuit as it may be colored brown due to the thermal springs’ water!