The relative uplift rates[clarification needed] calculated at Fagal in the early 1980s were reportedly 24 at Fagal, 320 at Obock, 256 at Tadjoura, and 72mm/103 yr at Djibouti City.[3]
During the last ice age, which affected water levels, it is believed that many people migrated across the Strait of Mandab of the Red Sea from the Fagal area to Yemen. Similarly it was a likely landing ground for many people arriving in the Horn of Africa from the Middle East.