Global Volcanism Program | Image GVP-00187
Fresh black lava flows issue from a spatter cone on the crater floor at Ol Doinyo Lengai volcano in June 1960. Eruptive activity was first observed in March 1960. Quiet extrusion of carbonatite lava apparently took place from 1960 to 1966, although few direct observations were made. In early August 1966 activity changed to vigorous ash eruptions.
Photo by Dick Moss, 1961 (courtesy of Celia Nyamweru, Kenyatta University).