I was in a lookout tower in the Rocky Mountains. In the tower scientists were using a high tech telescope to scan the southern pacific ocean to see if there were any islands or land that had not yet been discovered (apparently these scientists had never heard of satellites).

While scanning I noticed these strange blank field in Southern Mexico. We decided to check it out and went to Mexico. When I was there, I found lots of strange lines and cracks in the ground.

I later discovered that the site used to be a quarry where an ancient American civilization had quarried the stone for one of their monumental buildings. However they quarried so carefully that when the building had served its purpose they took it apart and replaced all the stones in the quarry exactly how they had found them leaving nothing except that cracks indicating the individual stones on the surface.