Rich,

When you say "another species of human" that implies that they could not successfully interbreed with the human species as we know it. Is that really what you mean? If not, then what?

What do you mean by "unknown technology . . . ?" The ancient technology of stone cutting and setting and moving are pretty well understood by contemporary anthropologists and engineers, so what, exactly, do you mean?

It will certainly be interesting to see what comes of this and if there is any inter-relationship with Bigfoot and Gnomes.