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Source/Further reading:

History, overview: https://www.history.com/topics/natura...

Britannica: https://www.britannica.com/place/Krak...

Independent, How Krakatoa Made the Biggest Bang: https://www.independent.co.uk/news/sc...

ABC Podcast: https://www.abc.net.au/radio/programs...

NYT, detailed review of book on eruption: https://www.nytimes.com/2003/04/20/bo...

Nautilus, the Sound so Loud It Circled the World Four Times: https://nautil.us/blog/thesoundsol...

NOAA overview: https://www.ncei.noaa.gov/news/dayhi...

LA Times, the Crack of Doom: https://www.latimes.com/archives/lax...

Sunsets, and effect on art: https://www.nytimes.com/2004/02/08/ar...

2018 eruption: https://www.nationalgeographic.com/sc...

Brief history of undersea cables: https://www.britannica.com/technology...

First mention in NYT, 27 August, 1883: https://timesmachine.nytimes.com/time...