Labor Two: The Hydra (concluded)

Iolaus, who had driven Heracles to Lerna in a chariot, looked on in anxiety as his uncle became entangled in the Hydra's snaky heads. Finally he could bear it no longer. In response to his uncle's shouts, he grabbed a burning torch and dashed into the fray. Now, as soon as Heracles cut off one of the Hydra's heads, Iolaus was there to sear the wounded neck with flame. This kept further heads from sprouting. Heracles cut off the heads one by one, with Iolaus cauterizing the wounds. Finally Heracles lopped off the one head that was supposedly immortal and buried it deep beneath a rock.