▁he ▁takes ▁cover ▁with ▁the ▁rest ▁of ▁his ▁tribe . ▁ ▁Cast ▁ ▁Leg acy ▁Though ▁the ▁" c ann ib al ▁bo om " ▁of ▁the ▁ 1 9 7 0 s ▁and ▁ 1 9 8 0 s ▁did ▁not ▁start ▁until ▁R ug ger o ▁De od ato ▁released ▁his ▁film ▁Ult imo ▁mondo ▁can n ib ale ▁in ▁ 1 9 7 7 , ▁Man ▁from ▁Deep ▁River ▁is ▁seen ▁as ▁either ▁the ▁insp iration ▁or ▁the ▁start ▁of ▁the ▁can n ib al ▁genre , ▁as ▁the ▁combination ▁of ▁the ▁rain ▁forest ▁setting ▁and ▁on screen ▁can n ib al ism ▁was ▁not ▁seen ▁until ▁its ▁release ▁( direct or ▁Um berto ▁Len zi ▁said ▁that ▁can n ib al ism ▁was ▁not ▁intended ▁to ▁be ▁the ▁central ▁theme ). ▁When ▁released ▁in ▁America , ▁it ▁would ▁prove ▁successful ▁on ▁Time ▁Square ' s ▁ 4 2 nd ▁Street ▁under ▁the ▁title ▁of ▁Sac rifice !, ▁offering ▁the ▁opportunity ▁for ▁similar ▁films ▁to ▁enjoy ▁that ▁same ▁success ▁( which ▁was ▁ultimately ▁the ▁case ). ▁Len zi ▁was ▁even ▁given ▁the ▁chance ▁to ▁direct ▁Ult imo ▁mondo ▁can n ib ale , ▁but ▁the ▁produ cers ▁chose ▁R ug ger o ▁De od ato ▁when ▁they ▁refused ▁to ▁match ▁Len zi ' s ▁price . ▁He ▁would , ▁however , ▁make ▁a ▁follow - up ▁in ▁ 1 9 8 0 ▁with ▁his ▁film ▁E aten ▁A live ! ▁( which ▁even ▁featured ▁the ▁Gr ind house ▁the aters