6. Pappas Stephanie. ‘Stone Animal’ Lake Seen from Space in All Its Crimson Glory // LiveScience (May 9, 2017). URL: https://www.livescience.com/59021-stone-animal-lake-natron-space-photo.html.

7. Sherrod D. R., Magigita M.M. & Kwelwa S. U. S. Geological Survey Geologic Map of Oldonyo Lengai (Oldoinyo Lengai) Volcano and Surroundings, Arusha Region, United Republic of Tanzania: Pamphlet, accompanying report 2013–1306 (2013). URL: https://pubs.usgs.gov/of/2013/1306/pdf/ofr2013-1306_pamphlet.pdf.

8. Global Volcanism Program. Ol Doinyo Lengai. [Factbox] URL: https://volcano.si.edu/showreport.cfm?doi=10.5479/si.GVP.BGVN200802-222120.

9. Davies G. J. ‘Hades’—A Remarkable Cave on Oldoinyo Lengai in the East Afri can Rift Valley // International Journal of Speleology 27B, 1/4 (1998). URL: https:// scholarcommons.usf.edu/cgi/viewcontent.cgi?article=1272&context=ijs.

10. Muirhead J.D. et al. Displaced Cratonic Mantle Concentrates Deep Carbon During Continental Rifting // Nature 582 (2020). doi: 10.1038/s41586-020-2328-3.

11. Lower Jaime & Frazzetta Andrea. Voyagers: Visual Journeys by Six Photographers // New York Times Magazine (September 25, 2016). URL: https://www.nytimes.com/interactive/2016/09/25/magazine/the-voyages-issue.html#Ethiopia.

12. Gómez F. et al. Ultra-small Microorganisms in the Polyextreme Conditions of the Dallol Volcano, Northern Afar, Ethiopia // Scientific Reports 9 (2019). doi: 10.1038/s41598-019-44440-8.

13. Belilla J. et al. Hyperdiverse Archaea Near Life Limits at the Polyextreme Geothermal Dallol Area // Nature Ecology & Evolution 3 (2019). doi: 10.1038/s41559-019-1005-0.

14. Andrews Robin George. They Didn’t Find Life in a Hopeless Place // New York Times (November 1, 2019). URL: https://www.nytimes.com/2019/11/01/science/extreme-life-aliens.html.