Surprised I missed this one until now!
Time? Where do you start (no pun intended here).
If the scientists have it right at the moment of the big bang all matter and time
did not exist. It's a hard concept to accept in a rational mind, one that uses time everyday of our lives. We measure it and race against it, but what is it exactly? It's not made of anything, you can't see it or smell it or feel it, though it's there every day of existence.
Your representation here is superb, a diagonal theme of ages like mile-stones of time going off into the far horizon. That theme grasps what time is perfectly. The sweet spot in the present, the past at our backs, and the future way ahead and obscured by the distance. I'm also feeling a slight Egyptian flavour here too with the sea and sand.
Once again your images have inspired!