The Lernaean Hydra was another child of Typhon and Echidna, a horrible sea monster with serpentine features and many - many - snake heads. Indeed, when someone cut off one head, two others sprouted in their place. She lived in Lerna, Argolida, and spent her time torturing the world and guarding a gate to the Underworld until Heracles (Hercules) was sent to kill her and saved the region from her. To solve the problem with her heads, he would burn the beheaded neck before the two new heads sprout.
