剧情介绍：【内容简介】　　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bbb。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,Africa'sGreatRiftValleyrunsthreethousandmilesfromtheRedSeatothemouthoftheZambezi.It'sadiverseterrainoferuptingvolcanoes,forest-cladmountains,spectacularvalleys,rollinggrasslands,hugelakesandmightyrivers,andishometocrocodiles,hippos,lions,elephants,flocksofflamingosandadiversityofindigenouspeoples.　　Usingstate-of-the-arthighdefinitionfilmingtechniques,thisseriesinvestigatesthegeologicalforceswhichshapedEastAfrica'sGreatRift,andwhichmakeitoneoftheworld'smostwildlife-richlandscapes.　　Part1:Fire　　Thevalleyistheproductofdeep-seatedgeologicalforceswhichhavespewedoutalineofcloud-wreathedvolcanoesstretchingfromEthiopiatoTanzania.TheirpeaksprovidearefugeforEastAfrica'smostextraordinarywildlife,includingnewlydiscoveredandpreviouslyunfilmedspecieswhichhaveevolvedsurprisingsurvivalstrategiestocopewiththeirchallengingmountainenvironment.　　Part2:Water　　TheGreatRiftValleychannelsahugediversityofwaterways-rivers,lakes,waterfalls,causticspringsandcoralseas-spanningfromEgypttoMozambique.Somelakeandoceandeepsharbourpreviouslyunseenlife-forms,whilecausticwaterschallengelifetotheextreme.ButwherevolcanicmineralsenrichtheGreatRift'swaterways,theyprovidethemostspectacularconcentrationsofbirds,mammalsandfishinallAfrica.　　Part3:Grass　　TheGreatRiftValleyprovidesthestageforanepicbattlebetweentreesandgrass-itscourseinfluencedbyvolcaniceruptions,landscapeandrainfall.OnitsoutcomereststhefateofAfrica'sgreatgameherds.IntheRift'ssavannas,grazersandtheirpredatorsstruggletooutwiteachother,forcingonegroupofprimatestodevelopasocialsystemthatpavedthewayfortheevolutionofmankind.