Milos Volcano
Milos is mainly a volcanic island (like the neighboring islands of Kimolos, Polyaigos, Antimilos, Glaronisia, etc.). The island was created by volcanic activity that began 2-3 million years ago and stopped 90,000 years ago. This volcanic activity occurred both on land and sea, resulting in the island being in the rock fossilized shells. Although no recent eruptions have taken place, the island is considered to be dangerous, since beyond earthquakes associated with volcanic activity, there have been mini-explosions with local disasters. The most recent of these occurred between the 1st and 3rd A.D. century in the region of Agia Kyriaki.
On the island there are two fallen volcanoes, the volcano of Fyriplaka in the central southern part of the island, which has an impressive crater with a diameter of 1700 meters and a height of 220 meters and the volcano of the Trachila northwest. Also, on the island there are many volcanic structures, such as the castle of the country, and the highest peak of the island, Prophet Elias. They consist of lava that solidified before spilling and it is mostly made of andesite. The volcanic rocks in Sarakiniko have a white color and were created by depositing repeated layers of material. Fossils have been found inside them.
In Milos we find hot flames (gas springs or fumarols) mainly in the east and south-east area of the island. Areas of which, because of their tectonic structure, gases from the interior of the earth (vapors, carbon dioxide, hydrogen sulphide, etc.) escape. In these areas it is sometimes characteristic the yellow color of sulfur and its smell, while the soil temperature is very high [eg in degrees Celsius: Ag. Kyriaki 102, Piromeni 100, Paliochori 101, Bounalia 54, Kastanas 86, Adamantas 100]. They consist of lava solidified before spilling, mainly from andesite. The volcanic rocks in Sarakinikos have a white color and were created by depositing repeated layers of material. Fossils have been found inside them.
Besides hot flames, there are also hot springs. We find them in various parts of the island, near the sea, some of which are thermal, but have not been exploited. Ippokratis mentions in his autobiography "About epidemics" a patient case from Athens who suffered from dermatopathy and resorted to the baths of Milos.