What happens when one volcano invades another? This may seem like a silly question, but the answer can have highly explosive consequences. Such as, when part of the Erta Ale volcano invaded Ethiopia's Hayli Gubbi volcano in 2025. Today's video will further explore this topic through the opinion 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 © 2012-2026 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 [email protected] 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): Public Domain: https://creativecommons.org/publicdomain/mark/1.0/ CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] U.S. Geological Survey [2] Hawaiian Volcano Observatory [3] Alaska Volcano Observatory [4] Brad S. Singer, Fidel Costa, Jason S. Herrin, Wes Hildreth, Judy Fierstein, The timing of compositionally-zoned magma reservoirs and mafic ‘priming’ weeks before the 1912 Novarupta-Katmai rhyolite eruption, Earth and Planetary Science Letters, Volume 451, 2016, Pages 125-137, ISSN 0012-821X, https://doi.org/10.1016/j.epsl.2016.07.015. (https://www.sciencedirect.com/science/article/pii/S0012821X16303636) [5] La Rosa A, Pagli C, Keir D, Ayele A, Wang H, Rivalta E and Lewi E (2025) Segmented dike intrusion linked to multi-level magma storage during and before the 2025 eruption at Erta Ale (East Africa). Front. Earth Sci. 13:1719687. doi: 10.3389/feart.2025.1719687, CC BY 4.0. [6] NASA Worldview, EOSDIS Worldview, (Satellite imagery: Aqua / MODIS, NOAA-20 / VIIRS, NOAA-21 / VIIRS, Terra / MODIS), (Thermal signatures: Terra / MODIS, NOAA-20 / VIIRS, Aqua / MODIS) at https://worldview.earthdata.nasa.gov/ 0:00 Volcano Invasion 1:17 Hawaii Example 2:33 Twin Volcanoes 3:11 Novarupta Eruption 4:46 Hayli Gubbi Eruption