We saw the food aid that was being provided to help to mitigate the effects of the drought in the rift valley.
A great rift valley also extends along the ridge over most of its length.
Several maar lakes exist in the rift valley adjacent to the volcano.
There are at least 20 hot springs, characteristic of a rift valley, in the valley or on its escarpments.
There have been recent earthquakes along the rift valley, the most recent being in 2000.
Over millions of years, the rift valley was faulted, tilted, and eroded, until the edges of the hard flood basalt layers formed ridges.
As the rift valley sank, the deposits were overlaid by sediment, which turned to rock under pressure.
Again, the floor of the rift valley is quite flat here providing a marked contrast to the escarpment.
