Where rift valleys form?

Rift valleys form along divergent plate boundaries, where tectonic plates are moving away from each other. As the plates move apart, the crust thins and the land sinks, creating a valley. The East African Rift Valley is a prominent example of a rift valley that is still in the process of forming. The valley is over 6,000 kilometers long and stretches from Ethiopia in the north to Mozambique in the south. The valley floor is dotted with lakes, volcanoes, and hot springs, all of which are evidence of the ongoing tectonic activity.