Hercules was very strong. He had to carry out twelve labour to become a god. ONE of these was to kill the Hydra.The Hydra was a monster with nine heads. It wasn't easy to kill. Each time he tried to cut off one of her heado, two more appeared in its place.With the help of his nephew lolaus,Hercules managed to cut off eight of the heads.Then,he grabbed the ninth head and buried it under a big rock.The Hydra was dead.