Abstract Thursday 243 - Mysterious

Thought I would try an abstract straight out of camera, instead of my usual taking a shot then manipulating it with lots of editing. All I have added is a grungy frame. I wonder if you can work out what it is and how I did it.  All I will say is that the use of flash was involved (the one on the camera, not the floor cleaner ).
Thank you to Ingeborg for coming up with another great theme

* Other floor cleaners are available.
Thank you for visiting my journal, all comments are much appreciated..