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　　东非大裂谷自红海至赞比西河口，连绵三千里，从太空都能看到。这里是多姿多彩的地方，有喷发的火山、覆盖着森林的高山、美丽的峡谷、广袤的草原、巨大的平湖和河流，是鳄鱼、河马、狮子、大象、火烈鸟和非洲人的家园。BBC采用最新的高清摄影技术，探讨了形式东非大裂谷的地质力量，展现世界上野生动物品种最多的地貌。


　　Visiblefromspace,AfricasGreatRiftValleyrunsthreethousandmilesfromtheRedSeatothemouthoftheZambezi.Itsadiverseterrainoferuptingvolcanoes,forest-cladmountains,spectacularvalleys,rollinggrasslands,hugelakesandmightyrivers,andishometocrocodiles,hippos,lions,elephants,flocksofflamingosandadiversityofindigenouspeoples.


　　Usingstate-of-the-arthighdefinitionfilmingtechniques,thisseriesinvestigatesthegeologicalforceswhichshapedEastAfricasGreatRift,andwhichmakeitoneoftheworldsmostwildlife-richlandscapes.


　　Part1:Fire


　　Thevalleyistheproductofdeep-seatedgeologicalforceswhichhavespewedoutalineofcloud-wreathedvolcanoesstretchingfromEthiopiatoTanzania.TheirpeaksprovidearefugeforEastAfricasmostextraordinarywildlife,includingnewlydiscoveredandpreviouslyunfilmedspecieswhichhaveevolvedsurprisingsurvivalstrategiestocopewiththeirchallengingmountainenvironment.


　　Part2:Water


　　TheGreatRiftValleychannelsahugediversityofwaterways-rivers,lakes,waterfalls,causticspringsandcoralseas-spanningfromEgypttoMozambique.Somelakeandoceandeepsharbourpreviouslyunseenlife-forms,whilecausticwaterschallengelifetotheextreme.ButwherevolcanicmineralsenrichtheGreatRiftswaterways,theyprovidethemostspectacularconcentrationsofbirds,mammalsandfishinallAfrica.


　　Part3:Grass


　　TheGreatRiftValleyprovidesthestageforanepicbattlebetweentreesandgrass-itscourseinfluencedbyvolcaniceruptions,landscapeandrainfall.OnitsoutcomereststhefateofAfricasgreatgameherds.IntheRiftssavannas,grazersandtheirpredatorsstruggletooutwiteachother,forcingonegroupofprimatestodevelopasocialsystemthatpavedthewayfortheevolutionofmankind.