The Last Day of Pompeii — Painting by Karl Brullov, 1830–1833
Photo Credit: By Karl Bryullov - tAFrCGFUhXM8Jg at Google Cultural Institute zoom level scaled down from second highest, Public Domain, https://commons.wikimedia.org/w/index.php?curid=21863469

Ruins of Pompeii — seen from the above with a drone, with the Vesuvius in the background
Photo Credit: By ElfQrin - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=45294721

Mount Pinatubo 1991 Eruption — The summit caldera as seen on Aug. 1, 1991
Photo Credit: By Photo by T. J. Casadevall, U.S. Geological Survey. - http://www.ngdc.noaa.gov/hazardimages/picture/show/690, Public Domain, https://commons.wikimedia.org/w/index.php?curid=620012

Infrared image of Mount Tambora — Taken from the space shuttle Endeavour at 0:54 GMT on 13 May 1992. The most striking geologic feature in this photograph is the large circular Tambora Volcano caldera: diameter is slightly more than 3 miles (5 kilometers)
Photo Credit: By Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth". - [2], Public Domain, https://commons.wikimedia.org/w/index.php?curid=9426815

The Scream — 1893 painting By Edvard Munch - Krakatoa sky?
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=37610298

Krakatoa Sky — 1888 paintings, showcasing the optical effects of the eruption on the sky over time
Photo Credit: By Krakatoa Committee of the Royal Society, G. J. Symons (editor) - Houghton Library, Public Domain, https://commons.wikimedia.org/w/index.php?curid=37216427

An 1888 lithograph of the 1883 eruption of Krakatoa — Image published as Plate 1 in The eruption of Krakatoa, and subsequent phenomena. Report of the Krakatoa Committee of the Royal Society (London, Trubner & Co., 1888).,
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=7696837

Coral thrown to Java — Coral block thrown onto the shore of Jawa after the Krakatau eruption of 1883
Photo Credit: By Tropenmuseum, part of the National Museum of World Cultures, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=8579093

1883 eruption of Krakatoa — The change in geography after the eruption
Photo Credit: By ChrisDHDR - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6753740

Krakatoa — cropped from Krakatoa featured in 100-rupiah banknote
Photo Credit: By Bank Indonesia - http://www.banknote.ws/COLLECTION/countries/ASI/INO/INO.htm, Public Domain, https://commons.wikimedia.org/w/index.php?curid=25324875

Saturn's changing appearance — Representations from Riccioli's 1665 Reformed Astronomy
Photo Credit: By G. B. Riccioli - Almagest Novum/Astronomia Reformata of 1651/1665, Public Domain, https://commons.wikimedia.org/w/index.php?curid=16707216