Kidnapped to Mystery Island(1964)

Three year old Ada, daughter of the British captain McPherson, is captured by the Indian Tukh sect to represent the incarnation of Kali. Ever hidden in a vast underground system of caverns, she watches over human sacrifices, doubting her vocation. 15 years have passed when her father finally finds her and attempts a rescue, together with a snake-hunter who has fallen in love with her.