The 1815 eruption of Mount Tambora, on the island of Sumbawa in Indonesia, was one of the most powerful in recorded history and is classified as a VEI -7 event.
No idea what a VEI-7 means but the fact of the matter is that with the eruption and the tsunamis, tens of thousands of people were killed.
According to History1800s.com:
It has been estimated that Mount Tambora stood approximately 12,000 feet tall before the 1815 eruption, before the top one-third of the mountain was completely obliterated. Adding to the disaster's massive scale, the huge amount of dust blasted into the upper atmosphere by the Tambora eruption contributed to a bizarre and highly destructive weather event the following year. And 1816 became known as The Year Without a Summer.
The Year without a Summer is, of course, the year Frankenstein was written.
The Year without a Summer is, of course, the year Frankenstein was written.