Stargate

It was all going to make sense how these things are tied together.

"They were actually aliens! Hey... Why aren't you surprised?"

"We already figured that out."

I mean, the OG movie was always riffing on "what if the crazy conspiracy theorists were right about the pyramids" being both serious and dumb. if it had been a little less well done, it would have been a trash movie.

Let's not lie to ourselves, it sounds like it'd make perfect sense in the Stargate universe.

All myths are true, all ancient gods are aliens, Merlin is an Asgard, all artifacts from history and legends are in fact Ancient devices. So the Yeti being an Unas is not outlandish at all.