Sand castle

I'm throwing this in as an entry for  Derelict Sunday.  It used to be much larger sand castle, but its moat did not protect it from the waves.  Can you make out the rain showers against the sky?   There was sun earlier and it came again throughout the afternoon.  A horizontal bit of rainbow appeared against the mass of clouds above the showing of blue sky. 

Thanks to Marlieske for hosting Derelict Sunday, DS94.


(My thumbnail function not working on this one, shucks)