Reading and writing about the eruption of a super-volcano in Toba, which occurred about 73,000 years ago in Sumatra, deposited about 2,800 km2 of volcanic tuff that covered parts of the Indian Ocean, Arabian Sea, and South China Sea. The destructive force of the eruption was so strong that it may have resulted in a volcanic winter and caused a catastrophic period of cool temperatures with little rainfall for about two centuries. I am working out how our knowledge of this prehistory is entangled with what we fear about our future.
But cooler than that, the video below has a great explanation for how a volcanic caldera is formed and why a lake with an island in the middle was formed after the eruption over a period of 1500 years ago.
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