Ever wondered what the interior of an active volcano looks like? Well, with spectacular drone footage, we can now answer that question, by descending deep into the crater more than half a thousand feet below ground. Spectacular colorations from sulfur and arsenic, additional chambers, and other fascinating sights. Today's video will analyze this footage through the analysis of a geologist at Indonesia's Egon volcano. Thumbnail Photo Credit: Frame grab from a video by the ExtremePursuit YouTube channel from a video at https://www.youtube.com/watch?v=ag_kDvaVZL0, image was color enhanced and used with permission. A special thanks to the Extreme Pursuit YouTube channel for granting me permission to use clips of his footage! Video Sources from the Extreme Pursuit YouTube channel: [1] https://www.youtube.com/watch?v=ag_kDvaVZL0 Subscribe to Extreme Pursuit at: https://www.youtube.com/@ExtremePursuit 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): CC BY 4.0: https://creativecommons.org/licenses/by/4.0/legalcode Sources/Citations: [1] ExtremePursuit YouTube Channel [2] Shevko, E. & Bortnikova, Svetlana & Abrosimova, Natalya & Kamenetsky, Vadim & Bortnikova, S. & Panin, G. & Zelenski, Michael. (2018). Trace Elements and Minerals in Fumarolic Sulfur: The Case of Ebeko Volcano, Kuriles. Geofluids. 2018. 1-16. 10.1155/2018/4586363. CC BY 4.0. [3] Latutrie, Benjamin & Ross, Pierre-Simon. (2019). Transition zone between the upper diatreme and lower diatreme: origin and significance at Round Butte, Hopi Buttes volcanic field, Navajo Nation, Arizona. Bulletin of Volcanology. 81. 10.1007/s00445-019-1285-x. [4] EGU22-8641, A. M. Sigurbergsdóttir & M. T. Gudmundsson, https://doi.org/10.5194/egusphere-egu22-8641, EGU General Assembly 2022, CC BY 4.0 [5] 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. 0:00 Inside an Active Volcano 1:01 How this Crater Formed 1:26 Geologist Analysis 2:31 Brecciated Rock 3:02 Secondary Chamber 3:39 500+ Feet Deep