In one sense, the scene of children on the beach is timeless, it could have been taken a hundred years ago. However, the landscape might have changed quite a bit.

Mechanically speaking, beaches are the act of erosion. The beach here probably looked quite different a hundred years ago. Because changes happen slowly, we don't notice much of it. But take a picture of anything year after year, and we begin to see changes.

With technology, and from this point forward, we are recording the transformation of our landscapes accurately. Assuming we're around in a couple thousand years, we should have a high-resolution time-lapse recording of all the changes. That should be pretty awesome to watch because it will show the changes that span a human lifetime in just a few seconds. Then, maybe, we will have an appreciation for just how dynamic the changes on our planet really are.

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