A major explosive volcanic eruption occurred in Ethiopia, and now there is the potential for some volcanic ash to fall on the summit of Mount Everest. As absurd as this might sound, it is completely true, all due to one of Africa's largest explosive volcanic eruptions in the last millennia. Today's video discusses the eruption of Hayli Gubbi (which may or may not have ended yet) via the knowledge and analysis of a geologist. Thumbnail Photo Credit: NASA Worldview, EOSDIS Worldview, (Satellite imagery: Aqua / MODIS), at https://worldview.earthdata.nasa.gov/ (for November 23rd, 2025). This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo). NASA EOSDIS Worldview satellite imagery Copyright © 2012-2025 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. All Rights Reserved. Associated license for NASA EOSDIS Worldview: https://github.com/nasa-gibs/worldview/blob/main/LICENSE.md We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Observing System Data and Information System (EOSDIS). We acknowledge the use of imagery from the NASA Worldview application (https://worldview.earthdata.nasa.gov/), part of the NASA Earth Observing System Data and Information System (EOSDIS). If you would like to support this channel, consider using one of the following links: (Patreon: http://patreon.com/geologyhub) (YouTube membership: https://www.youtube.com/channel/UCYeGh5VML5XPr5jYnzh3J6g/join) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at geologyhubyt@gmail.com and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image (and this list does not include every license used in this video and/or thumbnail image): CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] NASA Worldview, EOSDIS Worldview, (Satellite imagery: Aqua / MODIS, NOAA-20 / VIIRS, NOAA-21 / VIIRS, Terra / MODIS), at https://worldview.earthdata.nasa.gov/ [2] Eloise Wilkinson-Rowe, Christine S. Lane, Catherine Martin-Jones, David Grady, Björn Hohmeier, Cécile Blanchet, Graciela Gil-Romera, Asfawossen Asrat, Lucas Bittner, Bernd Wagner, Frank Schäbitz, Henry Lamb, Refining Late Holocene explosive eruption histories of the Main Ethiopian Rift with lake sediment tephra records, Quaternary Science Reviews, Volume 371, 2026, 109685, ISSN 0277-3791, https://doi.org/10.1016/j.quascirev.2025.109685. (https://www.sciencedirect.com/science/article/pii/S0277379125005050), CC BY 4.0. This source was used to cite the approximate age of a major Boset explosive eruption along with its tephra volume, and the tephra volume of the Corbetti Caldera's Holocene plinian eruption. [3] VEIs, dates/years, composition, & bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger and are not the Nabro volcano, Hayli Gubbi volcano, Piton de la Fournaise volcano, Boset volcano, Jabel Marra volcano, or (the tephra volumes only) of the Meidob Volcanic Field or the Corbetti Caldera, are all sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/controller.cfc?method=lameve, Used with Permission [4] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by Youtube.com/GeologyHub on Oct 5th, 2022. [5] VAAC Toulouse, https://vaac.meteo.fr/ 0:00 Hayli Gubbi Eruption 1:08 Eruption Size Estimate 2:27 No Eruptions in 12,000 Years? 3:46 Precursory Activity