According to one of the local indigenous people called the Shuars, there exist superior entities that can take any form such us a water fall, a jaguar, a snake, a bird, etc. And live inside the Tayos Cave in Ecuador. Arupta is one of them.

Tayos Cave (Cueva de los Tayos). Short:
https://youtu.be/1MUYFWRtqz0?feature=shared

See photos taken of Arupta from video interview about "La Cueva de los Tayos", the Cave of the Tayos: