All Doinyo Lengai, the only active carbonatite volcano in the world 1955 All Doinyo the Lengai, began to erupt, spitting in the air the ashes and dust of sodium carbonate. This is an unusual volcano, because its lava is rich in sodium and poor in quartz. From afar it seems that the Lengai, covered with snow, like mount Kenya and Kilimanjaro, but upon closer examination it appears that the whitish substance not snow, and sodium carbonate, trace the recent eruptions. The volcano is located in Tanzania, in the part of the Fault Zone, which is called Grid polar cod, where, as expected, the crust is particularly thin. I can add description