Much of the East African Rift shows up in this series of maps. The Afar
Triangle is visible in the far north. The match of opposing coasts of the Red
Sea breaks down here, because the Afar Triangle is actually mostly exposed Red
Sea ocean floor. Note the area below sea level (Danakil Depression). The real
edge of Africa is the high scarp west and south of the Afar Triangle, which
accommodates the corner of Yemen nicely.