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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.
"Hercules and the Lernaean Hydra" by Earl Staley.
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Image courtesy of Mr. Earl Staley.

The Lernaean Hydra

A long time ago, Greek people believed that a long strip of stars was really an image of a gigantic serpent known as the Hydra. The people of Lerna were terrorized by this serpent--a horrifying beast with many snake-like heads, one of which was immortal. The heads of the Hydra could grow back even if they were cut off. Anyone approaching the Hydra could also be killed by its venomous breath.

The destruction of the Hydra was one of the many difficult tasks that Heracles, had to perform to show that he was sorry for a terrible crime he committed. Heracles was so brave and strong that he succeeded in killing the Hydra, with the help of his nephew, Iolaus. Everytime Heracles would cut off one head of the beast, Iolaus would sear its injured neck, preventing new heads from growing back.

During their fight, an enormous crab emerged from the swamp to aid the Hydra. Heracles killed the crab by crushing its shell with his foot. Heracles buried the Hydra's head under a heavy rock.

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