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Ol Doinyo Lengai volcano (Tanzania), activity update: ash fall, closure of Moiravo Tented Lodge

Thu, 6 Sep 2007, 18:39
18:39 PM |

It seems that the eruption at Lengai is indeed a major event and that explosive activity has taken or is taking place in addition to lava flows and probably, bush fires. According to local sources from the nearby Moivaro - Lake Natron Camp, Lengai first erupted at midnight and at 6 am on 4 September. A pilot reported ash rising to 20,000 ft (ca. 6 km). Ashfall was reported from Engaresero Village, but there are no reports on injuries or fatalities. The highly regarded Moivaro Tented Lodge near Lake Natron has been temporarily evacuated.


Scientists including Matthieu Kervyn warn to approach the volcano as it could develop into a major explosive, crater-clearing eruption such as in 1966-67. Extremely dangerous pyroclastic flows could be and are likely to be associated if the eruption escalates. 

Previous news

Thu, 6 Sep 2007, 11:47

Ol Doinyo Lenai volcano (Tanzania), eruption news: large summit eruption, lava overflows and ash plume (?)

Satellite image of the eruption at Lengai volcano (image: NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team)
A large eruption seems to be taking place at Lengai volcano, this time for real: On 4 Sept., reports started coming in that a large (natrocarbonatite?) lava flow is descending the West flank. A considerable ash plume was visible on satellite data.
... Read all
Wed, 5 Sep 2007, 06:00

Ol Doinyo Lengai volcano (Tanzania) - Smithsonian / USGS Weekly Volcanic Activity Report for 5 September-11 September 2007 (New Activity / Unrest)

An eruption of Ol Doinyo Lengai on 4 September produced an ash plume that was reported by a pilot and visible on satellite imagery. Ashfall lasted about 12 hours in the village of Engare Sero, about 18 km N. Dark areas on the NW, W, and E flanks that were noticeable on satellite imagery from 4 September were possibly due to recent lava flows and burned vegetation or both. ... Read all
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Satellite image of Ol Doinyo Lengai volcano by (c) Google Earth View
Satellite image of Ol Doinyo Lengai volcano by (c) Google Earth View
Stratovolcano 2890 m
Tanzania, -2.75°S / 35.9°E
Current status: minor activity or eruption warning (3 out of 5) Ol Doinyo Lengai volcano eruptions:
1550 BC (?), 50 AD (?), 700 AD (?), 1350 (?), 1880, 1882, 1904, 1907, 1914, 1916, 1921, 1926, 1940, 1954, 1955, 1958, 1960, 1967, 1983, 1994, 2006, 2007-ongoing
Typical eruption style
Explosive activity. In addition, at least during the past +-30 years near-continuous effusion and mildly explosive eruption of natrocarbonatite lava from vents inside the crater, sometimes overflowing over the rim, is taking place.

Ol Doinyo Lengai volcano tours

Crater Highlands & Rift Valley (Tanzania)
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10-day trekking and wildlife safari to the Ngorongoro Highlands and the Rift Valley, Tanzania
10 days / 9 nights - Moderate
Price $ 4100
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