Behold my heaviest piece of fanart so far :D

During two of the monthly brony meetups in Cologne I decided I wanted to turn one of the quite have boulders lying near the banks of the Rhine into a little memorial to my little pony and our meetup.

So I proceeded to paint one side with out meetup's mascot Colonia and the other with the Royal Sisters Ying and Yang from the series.
The color remained quite intact after a month of exposure to the weather at the place and I am quite curious to see how well it will remain (if at all) when we return to the place next year.