What was the largest eruption to ever occur in Turkey and which volcano was responsible for it?

The largest eruption to ever occur in Turkey was the eruption of Mount Erciyes. Mount Erciyes is located in Kayseri, in central Turkey, and is part of the Taurus Mountains. The eruption of Mount Erciyes is estimated to have occurred around 2530 BC.

The Mount Erciyes eruption was a VEI-7 event, which means it was a super-colossal eruption. It is estimated that the eruption was around 150 times larger than the 1980 eruption of Mount St. Helens in the United States. The eruption had a major impact on the surrounding region, and is believed to have been a significant factor in the decline of the Hittite Empire.

The eruption of Mount Erciyes produced a large amount of tephra, which covered an area of around 1.5 million square kilometers. The tephra was up to 20 centimeters thick in some areas, and would have had a significant impact on the local environment. The eruption also produced a large amount of volcanic ash, which would have had a significant impact on the climate of the region.