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When Zeus decided to end the Bronze Age with the great deluge, Deucalion and his wife, Pyrrha, were the only survivors. Even though he was imprisoned, Prometheus who could see the future and had foreseen the coming of this flood told his son, Deucalion, to build an ark and, thus, they survived. During the flood, they landed on Mount Parnassus, the only place spared by the flood.
Once the deluge was over and the couple were on land again, Deucalion consulted an oracle of Themis about how to repopulate the earth. He was told to throw the bones of his mother behind his shoulder. Deucalion and Pyrrha understood the "mother" to be Gaia, the mother of all living things, and the "bones" to be rocks. They threw the rocks behind their shoulders, which soon began to lose their hardness and change form. Their mass grew greater, and the beginnings of human form emerged. The parts that were soft and moist became skin, the veins of the rock became people's veins, and the hardest parts of the rocks became bones. The stones thrown by Pyrrha became women; those thrown by Deucalion became men.
The story of Deucalion and Pyrrha is also retold in the Roman poet Ovid’s famous collection Metamorphoses. In this retelling, Jove (the Roman equivalent of Zeus) takes pity on the couple, recognizing them to be devout worshipers. He parts the clouds and ends the deluge specifically to save Deucalion and Pyrrha, who are floating aimlessly on a raft. When the storm has cleared and the waters have subsided, Deucalion and Pyrrha are taken aback by the desolate wreckage of the land, and understand that they are now responsible for repopulating the earth. Confused on how to carry out their destiny, they go to see the goddess Themis. Themis tells Pyrrha that she must cast the bones of her mother to successfully reproduce. Pyrrha is distraught at the idea of desecrating her mother’s honor by digging up her bones, but Deucalion correctly reasons that Themis is referring to great mother earth, as Themis would never advise someone to commit a crime. Both Pyrrha and Deucalion throw a stone over their shoulder – Pyrrha’s turning into a woman, Deucalion’s turning into a man.
Once the land has been repopulated with humans, mother earth follows suit and begins to produce all other forms of life. Ovid uses this opportunity to inform his audience that heat and water are the sources of all life – “because when heat and moisture blend in due balance, they conceive: these two, these are the origin of everything. Though fire and water fight, humidity and warmth create all things; that harmony” (Ovid – pg 15).
In Latin the word pyrrhus means red from the Greek adjective πυρρός, purrhos, i.e. "flame coloured", "the colour of fire" or simply "red" or "reddish". Pyrrha was evidently named after her red hair. Horace (Ode, i. 5) and Ovid describes her as red haired.