Hercules and the hydra from Lerna

This is one of the labours of Hercules, during which the hero manages to kill the terribile hydra that afflicted the surroundings of Lerna, burning its nine heads and crushing with a rock the last, immortal one. The hero's arrows, wet with the blood of the monster, will make the wounds caused by them incurable. Photo: Fotografia d' Arte di Paolo Tosi