Volcanic activity frees giant scorpions from the earth who wreak havoc in the rural countryside and eventually threaten Mexico City.
Hank Scott
Teresa Alvarez
Artur Ramos
Juanito
Dr. Velazco
José de la Cruz
Florentina
Major Cosio
Father Delgado
Train conductor (uncredited)
Victor Steven (uncredited)
Chumacho (uncredited)
Lineman killed on pole (uncredited)
Villager (uncredited)
Villager (uncredited)
Narrator (voice) (uncredited)
