What if Humans Are NOT Earth's First Civilization?

Humanity has been looking to the stars in search of extraterrestrial life, but we’ve found nothing yet. However, there are some researchers who believe we should be taking a closer look at our own planet for the possibility that an advanced alien civilization existed here on Earth before humans.

While the idea of an alien species existing on Earth long before humans might sound far-fetched, there are many reasons why it could be a possibility.

To add to that, several past advanced civilizations have left behind mysterious legacies, interesting mythology, and some civilizations have vanished without a trace.

So could it be possible that an advanced alien civilization existed on Earth before us, and influenced early civilizations?