The following crater views are looking north toward Lake Natron from the summit of Lengai.
July 17, 1997. Note the large area of recent lava in the NW part of the crater. The photo was made by my
climbing partner, Scott Smith.
Approximately Aug 5, 1998. Notice that lava had not yet crossed the NW crater rim. The tall cone
in the center is T47.
July 25, 1999. The northernmost of the cones is T40, site of most activity from July 23-Aug 7. Since
1998, lava has spilled over the NW crater rim and also over the E crater rim. Those locations are now
referred to as crater rim overflows.
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