I have read your OP and a few of the responses. I have brought up this question now and again and have never yet seen any response containing actual evidence. To search for ancient, intelligent peoples with advanced techniques which have unaccountably left no trace - funny that!! - is a wild goose chase. It is fun to imagine such peoples, but that's our wonderfully evolved, human imaginations at work.Quote
Hello, first time poster here and an antiquity/archeology fanatic.