An explosive eruption from Tanzania's Ol Doinyo volcano in 1966. Explosive activity began in August 1966, near the end of an eruption beginning in 1960 that consisted of quiet emission of lava flows in the summit crater. Ash deposits from previous eruptions whiten the volcano's slopes like snow. (Photo by Gordon Davies, 1966 / courtesy of Celia Nyamweru, Kenyatta University).

The active north crater of Ol Doinyo Lengai volcano

Observing strombolian eruptions of black natrocarbonatite lava at Lengai volcano

Night-time scene inside the active crater of Lengai

Whitened natrocarbonatite lava and a steep crater cone,- called hornito