Legend tells us that when Hercules passed through the lands of southern Gaul to confront the monster Geryon Hispanic, was welcomed by King Bébrix, father of the princess Pyrene. The hero, the girl seduced by false promises of marriage. Achieved its purpose, the Rogue went on his way, leaving the girl abandoned.
Months later, Pyrene, after giving birth to a snake, horrified fled into the woods, where he was devoured by wild beasts.
Upon returning from the expedition, the hero found the remains of the unfortunate Princess scattered through the woods. The collected and, after burial, rose on the grave a magnificent stone mausoleum. And all these mountains baptized with the name of Pyrene.