Sound range of the Krakatoa explosions

Map showing the geographical range of humans hearing the explosions generated during the eruption of Krakatoa, the island in the Sunda Strait, Indonesia on 27 August 1883. Plate 16 from The eruption of Krakatoa, and subsequent phenomena. Report of the Krakatoa Committee of the Royal Society, edited by G.J.Symons (London, Trubner & Co., 1888). The plate is inscribed: ‘Krakatoa. Rep.Roy.Soc.Com. Plate XVI. MAP SHOWING THE PLACES AT WHICH THE SOUNDS OF THE EXPLOSIONS WERE HEARD ON AUGUST 26-27 THE SHADED PORTION INDICATES APPROXIMATELY THE AREA OVER WHICH THE SOUNDS WERE HEARD. Malby & Sons, Lith.’