I visited Mesa Verde with my Dad one October, and my most vivid memory is a simple, quiet moment.
As we sat among the ruins, for just a few minutes, there were no sounds at all. No electric motors hummed, no tires droned against pavement, no distant thump from a stereo; no human voices or airplanes overhead. It was perfectly still.
A hundred years ago, this would not have been unusual.
Now there are people living their entire lives without ever having this experience.