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59 minutes
First broadcast: on BBC Two ScotlandLatest broadcast: on BBC Two Northern Ireland HD
The Great Rift Valley channels a huge diversity of waterways - rivers, lakes, waterfalls, caustic springs and coral seas - from Egypt to Mozambique. Show more
48 minutes
First broadcast: on BBC Two EnglandLatest broadcast: on BBC Two Wales HD
Series exploring east Africa's Great Rift Valley. On the vast savannahs, grazers and predators struggle to outwit each other, forcing primates to develop social systems. Show more
49 minutes
First broadcast: on BBC Two ScotlandLatest broadcast: on BBC Two Northern Ireland
Volcanic peaks soaring above the scorching plains of East Africa create cool islands of habitat where strange creatures have evolved in splendid isolation. Show more
