Bubbling magma and the smell of sulphur
A third crevice cuts south, splitting not far from Lake Victoria. One branch of the rift runs to the east, the other to the west of the lake. The two branches of this third crevice are moving apart by about one millimeter a year.
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The dramatic event that Ayalew and his colleagues witnessed in the Afar Desert on Sept. 26, 2005 was the first visual proof of this process — and it was followed by a week-long series of earthquakes. During the months that followed, hundreds of further crevices opened up in the ground, spreading across an area of 345 square miles. “The earth has not stopped moving since,” geophysicist Tim Wright of the University of Oxford says. The ground is still splitting open and sinking, he says; small earthquakes are constantly shaking the region. – MORE