My almost grown grandsons see only a stooped withered old man when they look at me, no clue of the young man I used to be. Or where I have been, the things I've done. They've only known me like this. Even 20 years ago, when they were born I was already a senior citizen.
In my mirror I also see what they see and can barely recall that once upon a time younger me.
Time and the elements move on leaving erosion behind upon mountains and people too.
Erosion on mountains is a slow process, we humans are not that fortunate.