🎥 Astonishing scenes in Dortmund ahead of Der Klassiker

Fans truly make the difference on derby days, and Der Klassiker is no exception.

Borussia Dortmund host rivals Bayern Munich on Saturday and ahead of kick-off, the scenes on the way to the stadium are astonishing. 

Thousands of fans supporting the black and yellow marched in unison and pulled off an impressive show of support for the home team.

Who are some of the best fan groups in Europe? Dortmund is surely up there!