During the August 2022 and March to September 2021 volcanic eruptions in Iceland, something strange was observed. Initially, these highly effusive eruptions were thought to have originated from the Krysuvik volcanic complex. Yet, the fissure direction, size of the eruption, and nonexplosiveness were different than what was expected to occur. From this and other evidence, the two latest eruptions at Geldingadalir and Meradalir were designated as originating from a completely separate and completely new volcano. This new volcano is known as Fagradalsfjall.

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Graphics of eruption dates are courtesy of the Global Volcanism Program, Smithsonian Institution. https://volcano.si.edu/
Images with a list of eruption dates have their dates sourced from the GVP of the Smithsonian Institution.

Google Earth imagery used in this video: ©Google & Data Providers

0:00 A New Eruptive Period
1:00 Fissure Angles
2:25 Boundaries of the New Volcano
3:23 Eruptive Fissure Lengths
3:43 Future Eruptions?
4:17 Conclusion

Sources:
[1] Global Volcanism Program, 2013. Volcanoes of the World, v. 4.11.2 (02 Sep 2022). Venzke, E (ed.). Smithsonian Institution. Downloaded 12 Sep 2022. https://doi.org/10.5479/si.GVP.VOTW4....
[2] Global Volcanism Program, 2013. KrysuvikTrolladyngja (371030) in Volcanoes of the World, v. 4.11.2 (02 Sep 2022). Venzke, E (ed.). Smithsonian Institution. Downloaded 12 Sep 2022 (https://volcano.si.edu/volcano.cfm?vn.... https://doi.org/10.5479/si.GVP.VOTW4...
[3] Global Volcanism Program, 2013. Fagradalsfjall (371032) in Volcanoes of the World, v. 4.11.2 (02 Sep 2022). Venzke, E (ed.). Smithsonian Institution. Downloaded 12 Sep 2022 (https://volcano.si.edu/volcano.cfm?vn.... https://doi.org/10.5479/si.GVP.VOTW4...
[4] Iceland Met Office, Aviation color code map