Substantiating the Shadow

If that’s your shadow in my cave,
I wonder where are you?
Some caves are darker than the night.
Minds get darker, too.

My mind rehearses uselessly
The past, since now you’ve gone.
Those shadows flicker right and left
While day keeps moving on.

Written for dVerse Quadrille #17 from a prompt by whimsygizmo, photo by Frank Hubeny.