Mysteries of the Planet

Throughout human history, civilizations have arisen, flourished, and declined. Many of them are well known to scientists, mainly from rich archaeological material and the works of ancient historians who were able to trace the rise and fall of these states. However, experts know very little about some cultures. The life of these civilizations mysteriously ended and they disappeared from the face of the earth without a trace: some cultures left the key to unraveling the reasons for their demise, and some - only secrets that gave rise to a whole series of myths and legends.