| Creation of a rift valley and the birth of an ocean. |
| Late in the Cenozoic, the main rift valley running through Ethiopia, Kenya, and points south, became the home of several species of large, noisy, and nearly hairless apes. |
| At first, the ban was due to an epidemic of rift valley fever, which killed more than 300 people in Saudi Arabia and Yemen. |
| Far below, bathed in sunshine, stretching away to misty purple horizons, lie the broad expanses of the rift valley. |
| The most important discussion of volcanic activity focuses on the Owens Valley, which is in fact an active rift valley. |
| Lake Baikal in Siberia, a World Heritage Site, lies in an active rift valley. |
