VIDEO: Rafa Nadal and Novak Djokovic play tennis... on a GLACIER

It was time to cool off for two of Tennis' best players. Check this out...

Forget Roland Garros, forget Wimbledon, how about this for a cool place to play tennis?

The two best players in the world played a bizarre exhibition game in Argentina, where they were attending a retirement event for David Nalbandian.

Check out the highlights in the video above.

image: © veroyama