In Greek mythology, Sisyphus or Sisyphos is the founder and king of Ephyra. He reveals Zeus's abduction of Aegina to the river god Asopus, thereby incurring Zeus's wrath. His subsequent cheating of death earns him eternal punishment in the underworld, once he dies of old age. The gods condemned him to push an immense boulder up a hill only for it to roll back down every time it neared the top, repeating this action for eternity. Through the classical influence on contemporary culture, tasks that are laborious, futile, and never-ending are therefore often described as Sisyphean.