Anyone who thinks of the sport of boxing immediately thinks of the most famous duel in boxing history, that between Muhammad Ali and George Foreman.
Even 50 years after October 30, 1974, in Kinshasa, the emotions of that match are still preserved today in the memory of the fans of this sport.
It is something that has marked an indelible memory of the era when the kings of the ring faced each other.
Books have been written and films have been made about that match watched by a billion people, a quarter of the world's population, one of which, "When We Were Kings", won the Oscar for best documentary film.
That magical challenge changed the lives of those who played it, because Ali, "The Greatest" as he defined himself and was considered by many, returned to the throne of the world, while "Big George" Foreman had a mystical crisis that almost drove him to leave the sport of boxing.
"Rumble in the jungle", fight in the jungle, was an unrepeatable spell for the atmosphere surrounding the match and for the two contenders: the man with the steel fist against the champion who danced like a butterfly and stung like a bee, Muhammad Ali.
Intelligence and cunning prevailed over brute force.