In Greek mythology, the Hydra is a nine-headed monster slain by Heracles, each of whose heads grows back as soon as it is cut off. Discovered in the 18th century, Hydra is also the name given to a ...
This was a detailed description of the whole Hercules v. the hydra myth (including the part most people forget, where Hercules' nephew deals with the hydra's severed heads). Note that, as the Wall ...