Lernaean Hydra just to slay Heracles. Upon reaching the swamp near Lake Lerna, where the Hydra dwelt, Heracles covered his mouth and nose with a cloth to protect himself from the poisonous fumes. He shot flaming arrows into the Hydra's lair, the spring of Amymone, a deep cave from which it emerged only to terrorize neighboring villages. He then confronted the Hydra, wielding either a harvesting sickle (according to some early vase-paintings), a sword, or his famed club. The chthonic creature's reaction to this decapitation was botanical: two grew back, an expression of the hopelessness of such a struggle for any but
Lerna On-site techniques of flint-knapping with imported obsidian and chert attest to cultural continuity over this long stretch of time, with reduction in the supply of obsidian from Melos testifying to reduced long-distance trade at the end of Early Helladic III, corresponding to Lerna IV. Lerna has one of the largest prehistoric tumuli of Greece, accumulated during a long Neolithic occupation; then its crest was levelled and extended — as at Early Helladic Eutresis and Orchomenus— in a new settlement: this stratum, called Lerna III in the site's stratigraphy, corresponds with Early Helladic II at other sites. Lerna III lacks signs