https://www.youtube.com/watch?v=WYqb5GKTn4Y

Some interesting connections between the red-haired six fingered giants with big feet and the Y symbol.(Clowns?) Lived in caves or underground and the last ones were supposedly killed in 1760's. The Indians finally got tired of being enslaved by them and killed them off.

Share a lot with the Nuraghe of Sardinia.

https://en.wikipedia.org/wiki/Nuraghe

I've also seen the Y symbol connected to the menorah in early rock art.

For what it's worth, the video was interesting.

Another source. https://www.onlinenevada.org/sites/default/files/Reid_Dansie_1975.pdf