PB reply
Well… this was certainly not what anon was expecting to read out of curiosity in native history…
> https://en.wikipedia.org/wiki/Sipapu
Hopi mythology (and similar traditions in other Pueblo cultures such as the Zuni and Acoma) states that this is the hole from which the first peoples of this world entered.
As they stepped outside of the sipapu, they changed from lizard-like beings into human form.
It is from this point that the "First Peoples" of the Earth began to divide and separate, becoming tribes. The original sipapu is said in Hopi and some other Uto-Aztecan Puebloan mythology to be located in the Grand Canyon.
Subterranean, shape-shifting lizards?
There's your alien connection anon.
Here are some links with information:
> https://www.britannica.com/topic/Hopi
> https://www.britannica.com/topic/kiva
> https://www.britannica.com/topic/snake-dance