The Methana volcano peninsula is situated approximately 50 kilometres (31 mi) southwest of Athens in Greece.
The Methana (Μέθανα) peninsula contains some 32 volcanoes, including the Methana volcano, that are mostly andesitic and dacitic lava domes. The volcanic activity in the peninsula began 1 million years ago and continued sporadically until 300 years ago. The last eruptions took place in 1700 at a submarine volcano north of Kameni Chora. On land there is also the historic lava dome of Kameni Chora that erupted in 230 BC. In August 1922 there were numerous reports of a possible eruption in the Kaimeno Vouno crater, however, this still remains unconfirmed. Methana is in the northwestern part of the group of Cycladic volcanoes that are considered active (Milos, Santorini and Nisyros). The rocks are mostly dacites and andesites. On Methana there are thermal springs and mofettes (gas exhalations). Methana is cut by many tectonic faults, and so it is an area in high danger of earthquakes. The major fault cuts the town of Methana from west to east.