The Segara Anak caldera — Created by the 1257 Samalas eruption
Photo Credit: The Segara Anak caldera

Heaven Lake — Crater lake at Tianchi (Heaven Lake, 天池) at Baitou (Chinese Changbai Shan) at the border of China and North Korea
Photo Credit: By Bdpmax, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=249945

Painting from the Manchu Veritable Records — date 1635
Photo Credit: By 清代作者 - 《滿洲實錄》, Public Domain, https://commons.wikimedia.org/w/index.php?curid=53844664

Emblem of North Korea — Features the Sup'ung dam under Mount Paektu and a power line as the escutcheon. The crest is a five-pointed red star. It is supported with ears of rice, bound with a red ribbon bearing the inscription "The Democratic People's Republic of Korea" in Chosongul characters
Photo Credit: By Original: Vector-Images.comConverted from EPS to SVG by: Oren neu dag - http://vector-images.com/image.php?epsid=815, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4496583

Mount Paekdu —
Photo Credit: By Laika ac from USA - Mt. Paekdu, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=31722819

Lake Taupo Oruanui eruption — A large eruption column during the Oruanui eruption as it may have appeared from space. The eruption occurred over a period spanning months/years, the image here depicts a new eruption column during the early phase of the overall event.
Photo Credit: By Anynobody - self-made from NASA photo, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=3775241

Lake Taupo — NASA satellite photo
Photo Credit: By NASA - NASA World WindTransferred from File:Lake taupo landsat.jpg (log) at English Wikipedia to Commons by Centic. The original uploader was John Fader at English Wikipedia., Public Domain, https://commons.wikimedia.org/w/index.php?curid=242123

Mount Pinatubo — In April 1991, a few months before eruption
Photo Credit: By United States Geological Survey - Figure 2A on Photographic Record of Rapid Geomorphic Change at Mount Pinatubo, 1991-94, Public Domain, https://commons.wikimedia.org/w/index.php?curid=366335

Pinatubo 1991 Eruption — Mount Pinatubo at daybreak on June 15, 1991, a few minutes after the start of the climactic eruption
Photo Credit: By USGS / Cascade Volcano Observatory - http://vulcan.wr.usgs.gov/Volcanoes/Philippines/Pinatubo/images.html, Public Domain, https://commons.wikimedia.org/w/index.php?curid=12591188

Destruction of Pompeii and Herculaneum — by John Martin (1789 - 1854)
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=16665041

Area affected by the Vesuvius eruption — By MapMaster - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2912359
Photo Credit: By MapMaster - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2912359