Drawing showing transportation of a colossus. The water poured in the path of the sledge, long dismissed by Egyptologists as ritual, but now confirmed as feasible, served to increase the stiffness of the sand, and likely reduced by 50% the force needed to move the statue.
There is a great deal of archeological evidence to suggest that there were pre-Holocene civilizations. These may have been advanced societies that may have existed before the current interglacial period (~11,700 years ago).
Catastrophic events, such as asteroid impacts and massive volcanic eruptions, could have reset human development multiple times throughout history.
Göbekli Tepe in Turkey, dated to ~9600 BCE, was built millennia before the supposed advent of agriculture and structured societies. Similarly, the discovery of submerged structures off the coast of India and Japan suggests the possibility of lost civilizations predating recorded history.
