ParoftheWarnerBrothersSportsParadeseries,thisshortfilmchroniclestheattemptbyagroupofmentonavigatetheColoradoriverthroughtheGrandCanyontoLakeMead.LedbyNormanD.Nevills,9menundertakea19daytripinthreespecialtybuiltrowboatsthroughthemorethan200rapids,someofwhichrunat30m.p.h.Alongtheway,theyseetheremnantsofpreviousexpeditionsincludingwreckedboatsandevenaskeleton.TheyalsovisitnowabandonedPuebloIndiancavedwellings.