What am I?

Thought I'd try something different today... This shot came about totally by accident, while trying to get a shot of my cousin's boys... However, when I brought it up on my computer, I thought it looked cool, and would make an interesting blip... So here we are...

So... Answers on a virtual postcard please... What is it? ;)

All will be revealed in tomorrow's blip... :)

Steph