PHOTO: Schalke supporters troll rivals Borussia Dortmund

Christmas is just around the corner, and it's safe to say most Borussia Dortmund supporters will be hoping their rival Schalke fans get nothing more than a lump of coal in their stockings.

With no love lost between the adversaries of the Ruhr Derby, a Schalke fan with a scaffolding background got to the top of a massive Christmas tree at Dortmund's world-famous holiday market, planting a team flag atop the 45-metre sapling.

The flag was removed shortly thereafter, but the damage has been done, with locals seething at the prospect of a blue and white flag adorning the spectacle at the centre of their town square.