View picture Ol Doinyo Lengai, Tanzania (3)
| Ol Doinyo Lengai, Tanzania (3) |
| Summital crater terraces. Natrocarbonatite lava and ash becomes quickly white. In the background a cinder cone is covered by fresh black material stands amongst white older cones and ash dunes (Photo: Tom Pfeiffer, www.volcanodiscovery.com) |
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