Whatever they ‘built’, their bones have sure evaporated into thin air!
That’s a matter of opinion bro. I believe the Nephilim were fathered by fallen angels. If you don’t, that’s fine. We will have to agree to disagree on that. I believe the bodies of dead Nephilim, are strewn across the landscape of the world.
I saw two, with my own eye balls. The sleeping lady in west Texas, and the one I got within maybe, a couple hundred yards of, the old man of the mountains, in New Hampshire. I saw it up close, before an earthquake destroyed it. If you think differently, so be it, but that’s what I think.