tp 4 March 2015 at 02:49 Without the caption, my first guess would have been ‘false-color display of a moon/martian/(choose-your-favourite-moon-or-planet) crater’.
It looks like an eye. I wonder if a similar process creates the iris.
After a few moments thought I guess not :-)
Oil near a drain in a parking lot.
Without the caption, my first guess would have been ‘false-color display of a moon/martian/(choose-your-favourite-moon-or-planet) crater’.