How to pronounce “great rift valley” in English

One of the features in Africa that has been so beneficial to us is one of the great geological structures on the planet, which is the Great Rift Valley.

Uh, this is in the Great Rift Valley in Africa, Lake Natron.

And one of these lakes is a lake called Lake Magadi, which is in the Kenyan stretch of the Great Rift Valley.