Unexplained Technology

I've been following several explorers over the years who have been questioning these same things. A few questions have always remained for me. If these wonders were created by sophisticated machinery and tools-- why haven't they been found? Was there some method we have yet to discover used to overcome gravity? These workers couldn't create artwork within the burial chambers without light. Torches were not used since no carbon soot could be found in any of them.

It's been suggested when advanced civilizations fall so does their advanced knowledge with them. Think of it this way. If some cataclysmic event were to strike today such as releasing multiple neutron bombs or a natural solar event it would completely disable every one of our electrical devices. This would mean none of our computers, vehicles or power grid would be operable thrusting us back into the dark ages. It would most certainly mean none of our electronic records would remain. Masses of people would starve causing them to revert back into jungle savagery. In tens of thousands of years (after civilization could once again redevelop) would they also not be perplexed?

The Earth is 4.543 billion years old. The earliest fossils ever found resembling human form was 66 million years back. That leaves a whole lot of time which yet remains to be discovered. There is a lot of intellectually conceited folks who'd like to think everyone who existed before us were stupid primitive people. Does anyone seriously believe it was only over the last hundred years or so human technology advanced for the first time?

Makes one wonder how many times technology has advanced only to be obliterated for unknown reasons forcing knowledge to be rediscovered again repeatedly. The mystery isn't what these ancients were able to do. Rather it is why we can't figure it out.