Just like the first pyramid ruin they had seen, a majestic domed structure suddenly appeared before the group, its imposing stature rivaled that of modern-day super skyscrapers, across a bottomless abyss (laser measurements put the depth at over 20,000 meters).
One cannot help but marvel, wondering what kind of civilization could create something so enormous in the ancient times? Did such highly technologically advanced civilization ever exist in human history?
All obscured under the traces of history, making it hard to know the truth.
According to the carbon-14 dating from the previous expedition, this underground ruin was built about 24,000 to 25,000 years ago.
This time period is undoubtedly abnormal because modern archaeology has confirmed that during this period, humanity as a whole was still in a primitive society, and there was no such advanced civilization globally.
