It's all about perspective really. At first glance this is a lovely old wagon wheel covered with snow. Blink once or twice and let your imagination go crazy. You might still see a wagon wheel in your mind's eye, but now can you see where it has been? Can you imagine how it ended up leaning against the barn?
Perhaps your mind's eye doesn't even see a wheel anymore. Maybe you see something else like a gigantic spider web or even better.
Have fun! Go crazy! Tell us what you see!
Special thanks to Georgie and Tweedles for this photo!