5.9
78 min
After a young man is killed in an unexplored subterranean cavern and his girlfriend driven mad by something she saw there, a track found at the scene cannot be identified with any known animal and thus a scientific expedition is launched to find out just what it is that is living there.
| Name | Character | Team | |
|---|---|---|---|
![]() |
José Elías Moreno | Profesor Díaz | Unowned |
| Carlos Cortés | Dr. Pena | Unowned | |
![]() |
Kitty de Hoyos | Hilda Ramírez | Unowned |
![]() |
David Reynoso | Jaime Rocha | Unowned |
![]() |
Columba Domínguez | Laura Ponce | Unowned |
![]() |
Javier Solís | Dr. Manuel Ríos | Unowned |
![]() |
Carmen Molina | Julia | Unowned |
| Ramón Bugarini | Apolinar | Unowned | |
![]() |
Carlos Nieto | Novio de Julia | Unowned |
| Marco Antonio Arzate | Unowned | ||
![]() |
Armando Acosta | Gerente de gruta (uncredited) | Unowned |
![]() |
Roberto Meyer | Padre de Julia (uncredited) | Unowned |
![]() |
Inés Murillo | Turista (uncredited) | Unowned |
| Miguel Suárez | Psiquiatra (uncredited) | Unowned |