King Augeas was said to own 3,000 cattle in the Augean-stables story.
The enormous herd explains why the stables became a symbol of an impossible accumulation of dirt. The myth says that the buildings had not been cleaned for many years, allowing dung to pile up to an extraordinary depth. Eurystheus assigned Hercules the task as one of the labors.
Rather than shovel the waste, Hercules diverted rivers through the stable area. The flowing water cleared the accumulated dung in a single day. The feat combines heroic strength with practical problem-solving and became the source of the modern expression “cleaning the Augean stables,” meaning the removal of deeply entrenched disorder.
The number 3,000 belongs to the traditional mythic scale of the herd, not a modern agricultural census. Ancient versions differ in surrounding details, including which rivers were diverted and how Augeas responded. The stable-cleaning achievement was nevertheless rejected by Eurystheus because Hercules sought payment.