To fly above the planet and see the messages below, one wonders the means. I think that a particle beam or laser like instrument could easily be programmed to alter the surface for any message. We could do that today if it were installed in a helicopter or Harrier Jet that hovers. The engineering expertise of Puma Punku shows the ancients had the knowhow to compute and therefor they must have been able to Fly. We were highly advanced on this Planet prior to the Carolina Bays Event that Washed this Earth of all evidence to how our world once was 12,900 years ago. Egypt has the message from that past hidden in the blowing sand.