The volcano of Methana belongs to the volcanic arc of the Aegean, along with those of Santorini and Nisyros. The Methana peninsula was created during the Tertiary period (11 million years ago) by a volcano, which is "roaring" constantly even today. The volcano of Methana had an intense volcanic activity between the period 276 to 239 BC, from reports of the ancient historians Strabo, Pausanias and Ovidus. Above the village of Kameni Chora, which is built amphitheatrically, on a volcanic rock, is the most famous volcanic crater. More specifically , from 300 BC until 20 A.D., as the volcanologist Fouke claims, created the Kameni Chora, which is the most recent eruption of the volcano. Craters are also present in the areas of Makriloglou, Mouskas and Kipselis. The crater of Kameni Chora has a depth of about 50m and a diameter of 100m.
In Methana you will see the remains of many volcanic eruptions. Southeast of the Turtle hill, at Stravologos as well as at Makrilogos, we encounter big craters. Also, you will see volcanic craters in the upper Mouska, in the village of Kameni Chora, which is the largest and most impressive of all in Kypseli. From the aforementioned craters, those who acted last were those at Kameni Chora.
Because of the volcanic rocks, the water of the Methana thermal springs has beneficial properties that are suitable for the treatment of several diseases such as arthropathy, rheumatism, etc.