top of page
  • Writer's pictureShiny Greece

Nisyros Volcano | The Five Craters and the Largest Hydrothermal in the World

Updated: Feb 27


George Papadellis | SG Head

The island of Nisyros is a volcano itself, belonging in the arc of southern Greece. It is located on the edge of the Aegean arc, along with the Caldera of Kos and the island of Giali. The first underwater volcano eruption occurred 150.000 years ago, while the main activity occurred 40.000 to 10.000 years ago. Today, hydrothermal explosions are taking place.

Nisyros Greece

Man vs Nature in the Crater of Nisyros Active Volcano - Photo by: ID 67214044 © Aniaannamaria |

Nisyros Greece consists of volcanic mountains around a main caldera with 4 km diameter, in which sulfur can be everywhere found. The caldera hosts the largest hydrothermal crater in the world, Stefanos, with a diameter of 300 meters. In total, Nisyros has 5 craters.

Nisyros Volcano Facts

Activity of Nisyros Volcano - Photo by: S.Nikolakakos, Nisyros Volcano 6, CC BY-SA 4.0

The last eruption of Nisyros Volcano Greece took place in 1888 and today there are active fumaroles on the island. Due to volcanic activity, Nisyros has thermal springs with a temperature of 30 to 60°C, of which the main ones are in Loutra and Palos.

Nisyros Volcanic Island

The Caldera of Nisyros Volcano Island - Photo by: Tatiana Bashinskaya, Kaldera - panoramio, CC BY 3.0

A volcanic structure rises to about 700 meters, giving the highest altitude of the island. The experience of a flight with helicopter over the caldera is definitely worth it.

The Nisyros Volcano James Bond matter: It is said that part of the James Bond Film "Moonraker" was filmed in the crater!

Nisyros Volcano Tour

Check out Nisyros Volcano Tour from: Viator, GetYourGuide and Kos4All.


888 views2 comments


Rated 0 out of 5 stars.
No ratings yet

Add a rating
Mar 29
Rated 5 out of 5 stars.

Nisyros Volcano beckons you with its unparalleled uniqueness. The ancient caldera, shaped by past eruptions, presents a surreal landscape ripe for exploration. You're drawn to its active fumaroles and bubbling mud pots, which create an otherworldly ambiance....!

Apr 15
Replying to

Little scary to think on what you walk!!! :)


Top Articles