hercules lived in greece he was the son of zeus the most powerful of the gods and alcmene hercules was very strong he had to carry out twelve labours 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 heads two more appeared in 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