What is the oldest known volcano in Turkey and when did it last erupt?

The oldest known volcano in Turkey is Mount Tendürek, which is located in the eastern part of the country, near the border with Iran. The volcano is estimated to be around 1.8 million years old and has been active during the Holocene epoch, which began around 11,700 years ago and continues to the present day.

The last eruption of Mount Tendürek occurred in 1855 and was a small explosive eruption that produced ashfall and minor damage to nearby villages. Since then, the volcano has been dormant, but it remains an important area of study for geologists who are interested in the tectonic processes that have shaped Turkey and the surrounding region over millions of years.