The crack is found on the African, Arabian and Somali tectonic plate boundaries. For the past 30 million years, the Arabian plate has been slowly moving away from the African continent.

The Arabian plate is moving away from Africa at a rate of about 1 inch per year, while the two African plates are separating even slower, between half an inch to 0.2 inches per year, according to ...

The Arabian plate moves away from Africa “at a rate of about 1 inch per year” while the African plates move “between half an inch to 0.2 inches per year”. Sign up for Today's Best Articles ...

The Arabian plate is moving away from Africa at a rate of about 1 inch per year, while the two African plates are separating even slower, between half an inch to 0.2 inches per year, according to ...