Ripples

Ripples never come back
They've gone to the other side
Look into the pool
Ripples never come back
Dive to the bottom and go to the top
To see where they have gone
Oh, they've gone to the other side

Mimicking Nature. The circles of the mat compete with the concentric circles of the ripples formed by the rain drops.
Thunder rumbled on throughout the day today. Can't recall a time when it has been so prolonged?