Join Hazen Audel as he embarks upon a life-long dream, trekking 500 miles through East Africa's Great Rift Valley. A mecca for wildlife, the valley is home to local tribes, extreme wilderness and rare and extraordinary animals. Primal Survivor: Extreme African Safari premieres this Sunday 5th November at 6pm, only on National Geographic UK. | National Geographic UK

RIFT VALLEY FORMATION A rift valley is a large elongated depression in the Earth’s crust, bounded by parallel faults, that forms when the crust is pulled apart by tensional forces. This geological feature is a result of divergent plate boundaries where tectonic plates move away from each other, causing the crust to thin, crack, and sink. PROCESS OF FORMATION: 1. Initial Uplift – Mantle convection and heat buildup cause the lithosphere to bulge and stretch. 2. Crustal Fracturing – The brittle cru