Not Everything’s a Story

There’s one thread of spider web
Between two lava cobbles,
Just the one, shining in sun.

Maybe it’s a leftover,
Maybe a failed beginning,
Maybe a belay device.

It shimmers in small breezes,
Lifts, then sags for gravity.
Do you know of any myths

Or cautionary fables
Involving a single thread
Of spiderweb caught on rocks?