Underground Ruins
I think the world’s greatest mystery today is Göbekli Tepe. It’s not even fully excavated, and is thought to contain 50x more ruins underground than has been uncovered.
No one really knows who built it, how old it is, its purpose, really we know next to nothing about it. As it stands, it could be the first religious temple in human history, it could change our understanding of hunter-gatherers, and it could change our very understanding of the history of our species.
Incredible stuff, and, in my opinion, more interesting because it’s real. It’s literally a new frontier.
Story Credit: Reddit