Bzsed upon other work—and I can’t remember the fellas name, but those depictions of birds, etc, had to do with constellations. It appears in my mind that the pillars are telling a story and giving a warning of when the comet storm happened and tehj ensuing destruction as well as where to look to see when it might happen again.
That is not conspiracy theory—and having a lost civilization does not mean one with flying machines and whatnot..but perhaps one of more advanced farming and perhaps using sound technology to move stone—or not....
Graham Hancock is a journalist, has always claimed to be nothing but...he takes information found out in the field and collates it and tries to attach meaning to that information.
In yesteryear, we had self education men that dedicated themselves to a particular field. They were not lettered in the Universities, but instead taught themselves in the field studying rocks and looking for patterns or not...These were the men that were the foundation of our sciences—people who observed their surroundings and reported about what they saw and their conclusions.
Who gains but supressing evidence of a lost civilization before this one that started some 10 thousand years ago? If mankind was almost wiped out by the Earth changes brought about at the close of the last era and the dawn of the Holocene—then those people were members of a lost civilzation—duh...
The lost civilization is a real possibility - ‘experts’ in various disciplines always seem to over look that prior to whatever happened around 10,800 BC not only changed the entire world, but caused sea level to rise on average 400 feet.
Where do most people live today? Along the coasts, by river mouths - all those areas from before 10,800 BC are now buried under hundreds of feet of silt and debris. There is so far no way to explore the ocean bottom under that depth of silt. Perhaps in the future new tech will make it possible, but until then, there is no way to know for sure, except to judge by the human experience and choice of living areas now reflect those of the deep past.