What is Ol Doinyo Lengai?
{{Infobox mountain | name = Ol Doinyo Lengai (Oldoinyo Lengai) | photo = Lengai from Natron.jpg | photo_caption = | elevation_m = 3,188 | elevation_ref = <ref>[http://www.nbs.go.tz/takwimu/references/Tanzania_in_figures2012.pdf Tanzania in figures 2012, National Bureau of Statistics, Ministry of Finance, June 2013, page 9] {{webarchive|url=https://web.archive.org/web/20131126120431/http://www.nbs.go.tz/takwimu/references/Tanzania_in_figures2012.pdf |date=2013-11-26 }}</ref> | prominence = | location = [[Tanzania]] | range = [[East African Rift]] | map = Tanzania |relief=1 | map_caption = | label_position = left | coordinates = {{coord|02|45|52|S|35|54|58|E|type:mountain_scale:100000|format=dms|display=inline,title}} | topo = | type = [[Stratovolcano]] | age = | last_eruption = 2019<ref>{{cite gvp |vn=222120 |name=Ol Doinyo Lengai }}</ref> | first_ascent = | easiest_route = Scramble }} [[File:Aerial view of Ol Doinyo Lengai erupting in 2008.jpg|thumb|250px|Ol Doinyo Lengai [[Volcanic eruption|erupting]] in 2008]] [[File:Carbonatite.jpg|thumb|250px|Carbonatite]] '''Ol Doinyo Lengai''' is a {{convert|2960|m|ft}} [[volcano]] in the [[East African Rift]] in [[Tanzania]].<ref>{{cite peakbagger|pid=11185|name=Ol Doinyo Lengai, Tanzania|accessdate=28 October 2019}}</ref> The name means '''Mountain of God''' in the [[Maasai]] language.<ref>{{cite book |title=Northern Tanzania |year=2009 |url=https://archive.org/details/northerntanzania00phil |publisher=Bradt Travel Guides |isbn=978-1-84162-146-3}}</ref><ref>{{cite web |title='Mountain of God' Volcano Preparing to Erupt |url=https://www.nationalgeographic.com/news/2017/07/tanzania-volcano-eruption-ancient-humans-science/ |website=National Geographic News |language=en |date=13 July 2017}}</ref> Ol Doinyo Lengai is the only volcano in the world that [[Volcanic eruption|erupts]] a [[Rock (geology)|rock]] known as [[carbonatite]].<ref>{{cite journal |last1=Venzke |first1=Edward |title=Report on Ol Doinyo Lengai (Tanzania) |journal=Bulletin of the Global Volcanism Netwo