The Leiningen South American cocoa plantation is threatened by a 2-mile-wide, 20-mile-long column of army ants.
| Actor | Role |
|---|---|
 Eleanor ParkerJoanna Leiningen | Joanna Leiningen |
 Charlton HestonChristopher Leiningen | Christopher Leiningen |
 Abraham SofaerIncacha | Incacha |
 William ConradCommissioner | Commissioner |
 Romo VincentBoat Captain | Boat Captain |
 Douglas FowleyMedicine Man | Medicine Man |
 John DierkesGruber | Gruber |
 Leonard StrongKutina | Kutina |
| NNorma CalderónZala | Zala |
| JJerado DecordovierNot listed | Not listed |
 Pilar Del ReyNot listed | Not listed |
 Bernie GozierNot listed | Not listed |
 Leon LontocNot listed | Not listed |
| JJohn MansfieldNot listed | Not listed |
 Rodd RedwingNot listed | Not listed |
 Jack ReitzenNot listed | Not listed |
| CCarlos RiveroNot listed | Not listed |