The Superclasico between River Plate and Boca Juniors is one of the biggest matches in world, and the Copa Libertadores final is one of the biggest matches in football.
When the two coincide, as they have done this year, it is an event of almost unprecedented magnitude.
On Saturday, the pair will play the second leg of the Libertadores final after a 2-2 draw in the first match, and ahead of that match, Boca held an open training session at La Bombonera.
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Fans came out in their numbers.
This is an astonishing display from their supporters.
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