Island of east Africa

starting roughly 23 million years ago in the oligocene the Great Rift Valley in east Africa and the middle east begins a massive volcanic activity. and the rift begins to spread quickly.

roughly 21 million years ago, the Red Sea begins to spread north and the Dead Sea becomes a northern extention. The Red Sea joins the Mediterranean Sea, the Sinai pennisular becomes an island.

roughly 20 million years ago the Afar depression begins to flood. the floor of the great rift valley begins to decend.

18 million years ago the horn of Africa begins to seperate from the rest of the continant of Africa.

7 million years ago the east side of Africa totally seperates from the main African continant.