Krakatoa sunsets. Artwork of the spectacular red and orange sunsets caused in London, England, by the August 1883 eruption of Krakatoa, a volcano thousands of kilometres away in Indonesia. The ash thrown up by the eruption caused sunsets like these for years afterwards. These three artworks are a sequence, showing twilight and afterglow effects at Chelsea, London, on 26 November 1883, at around: 4.40pm (top); 5pm (middle); and 6.15pm (bottom). These are among the thousands of sunset sketches made by the British artist William Ashcroft. Krakatoa's eruption prompted many reports and investigations. These artworks formed the frontispiece for The Report of the Krakatoa Committee of the Royal Society (1888).