Thats more hideous than Piltdown man.

In the realm of pseudo archeology are my musings of highly advanced civilizations of the zep tepi or older that did not build in stone and left virtually no trace like our own perishable buildings of today. They could be 10 to fourteen thousand years old when the ice age gave way in great pulse melts. I ponder lost recipees of thin cement/concrete that mimics stone or semi opaque buildings of silica. Based on actual geologic events I can't rule out advanced civilizations by humans 50 to 70,000 years ago. The imagination of fantasy writers can run wild in such places.
Fragile remnants are found in deserts and peat bogs but little fragility remains under the great rising water of the ocean