No, it would have been discovered. We’re the latest ...if not the greatest..

From what I've seen there is obvious signs of lost ancient technology. When we look at places like Machu Picchu in Peru, and the asayne quarry in southern Egypt, and other monoliths around the world cut from granite or quartzite the hardest rock in the world, weighing as much as 20 tons or 100 tons, cut with precision perfect 90 degree angles, as well as drill holes perfectly 2 in in diameter spaced perfectly 5in apart, there are still signs of what appears to be circular saw marks, which would be impossible to do with bronze age tools. Nearly impossible even with today's technology. Not to mention how they erected these monoliths. How these feats were accomplished remains an enigma I am not going to speculate on theories, there is no evidence of how these things were done.